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	<title>Notas de aplicación sobre tribología a altas temperaturas - NANOVEA: perfilómetros, tribómetros, nanoindentadores y medidores de rayaduras avanzados para el ensayo de materiales.</title>
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	<link>https://nanovea.com/es/categoria/notas-de-aplicacion-2/pruebas-de-tribologia/tribologia-de-alta-temperatura/</link>
	<description>Instrumentos de metrología para la investigación de materiales y el control de calidad</description>
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	<title>Notas de aplicación sobre tribología a altas temperaturas - NANOVEA: perfilómetros, tribómetros, nanoindentadores y medidores de rayaduras avanzados para el ensayo de materiales.</title>
	<link>https://nanovea.com/es/categoria/notas-de-aplicacion-2/pruebas-de-tribologia/tribologia-de-alta-temperatura/</link>
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		<title>High Temperature Brinell Hardness Testing</title>
		<link>https://nanovea.com/es/high-temperature-hardness-testing-of-steel/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=high-temperature-hardness-testing-of-steel</link>
					<comments>https://nanovea.com/es/high-temperature-hardness-testing-of-steel/#respond</comments>
		
		<dc:creator><![CDATA[Andrew Shore]]></dc:creator>
		<pubDate>Thu, 20 Aug 2026 23:22:06 +0000</pubDate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[High Temperature Mechanical Testing]]></category>
		<category><![CDATA[High Temperature Tribology]]></category>
		<category><![CDATA[Indentation | Hardness and Elastic]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=26582</guid>

					<description><![CDATA[<p>Application Note &#124; High Temperature Mechanical Testing High Temperature Hardness Testing of Steel Using Brinell Indentation Mapping Steel Hardness Loss from Room Temperature to 925°C with NANOVEA T2000 Tribometer Request High Temperature Hardness Testing Speak with an Application Engineer Research &#38; Experimental Testing Frank Liu Visual Design &#38; Editorial Andrew Shore Introduction High temperature hardness [&#8230;]</p>
<p>The post <a href="https://nanovea.com/es/high-temperature-hardness-testing-of-steel/">High Temperature Brinell Hardness Testing</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
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									<p>Application Note | High Temperature Mechanical Testing</p>								</div>
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					<h1 class="elementor-heading-title elementor-size-default">High Temperature Hardness Testing of Steel Using Brinell Indentation</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">Mapping Steel Hardness Loss from Room Temperature to 925°C with NANOVEA T2000 Tribometer</h2>				</div>
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															<img fetchpriority="high" decoding="async" width="1400" height="420" src="https://nanovea.com/wp-content/uploads/2026/08/high-temperature-hardness-testing-steel-brinell.jpg" class="attachment-full size-full wp-image-26554" alt="Material performance testing under extreme temperature conditions for aerospace and defense applications" />															</div>
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					<p class="elementor-heading-title elementor-size-default">Research &amp; Experimental Testing</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">Frank Liu</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">Visual Design &amp; Editorial</p>				</div>
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					<p class="elementor-heading-title elementor-size-default">Andrew Shore</p>				</div>
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		</section>
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					<h2 class="elementor-heading-title elementor-size-default">Introducción</h2>				</div>
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									<p class="isSelectedEnd">High temperature hardness testing provides insight into how the mechanical behavior of metals changes as temperature increases. Materials that exhibit high hardness at room temperature can soften significantly when exposed to elevated temperatures, making temperature-dependent hardness an important consideration when selecting materials for applications such as jet engines, high-temperature processing equipment, and other thermally demanding environments.</p><p>In this study, a steel sample was evaluated using Brinell indentation with the <a href="https://nanovea.com/instruments/t2000/">NANOVEA T2000 Tribometer</a>. Hardness measurements were performed at 25, 200, 400, 600, 800, and 925°C to map the change in steel hardness with temperature. The results show a gradual reduction in hardness through approximately 600°C, followed by a much sharper decline at higher temperatures, resulting in an 84% decrease in hardness between room temperature and 925°C.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Why High Temperature Hardness Testing Matters</h2>				</div>
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									<p class="isSelectedEnd">Hardness is a mechanical property that describes a material’s resistance to localized deformation. Higher hardness generally corresponds to greater resistance to indentation and permanent surface deformation.</p><p class="isSelectedEnd">Temperature can significantly alter this behavior. A material that remains hard at room temperature may soften as temperature increases, changing its mechanical response under elevated-temperature conditions. For materials intended for high-temperature applications, understanding these changes is important when evaluating their mechanical limits.</p><p><a href="https://nanovea.com/high-temperature-mechanical-tester/">High temperature hardness testing</a> makes it possible to measure these changes directly as temperature increases rather than relying only on room-temperature properties. In this study, the steel sample provides a clear example of how hardness can remain relatively stable over part of the temperature range before declining rapidly at higher temperatures.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Objetivo de medición</h2>				</div>
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									<p class="isSelectedEnd">The objective of this study was to evaluate how the Brinell hardness of steel changes as temperature increases from room temperature to 925°C.</p><p>Using a 10 mm tungsten carbide (WC) ball, a load of 1000 N (~100 kgf) was applied to the steel sample at 25, 200, 400, 600, 800, and 925°C. The resulting indentations were measured using NANOVEA’s 3D Line Sensor to determine their diameter for <a href="https://nanovea.com/instrumented-indentation-hardness-elastic-modulus/">Brinell hardness calculation</a>.</p>								</div>
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							<img decoding="async" width="300" height="264" src="https://nanovea.com/wp-content/uploads/2026/01/nanovea-t2000-high-load-pneumatic-tribometer.jpg" class="elementor-animation-grow attachment-medium size-medium wp-image-25797" alt="NANOVEA T2000 high load pneumatic tribometer for friction and wear testing" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">Procedimiento de ensayo</h2>				</div>
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									<p class="isSelectedEnd">High temperature Brinell hardness testing was performed with the steel sample mounted inside the NANOVEA T2000 heated chamber. The sample was tested at six temperatures from 25°C to 925°C using a 10 mm tungsten carbide (WC) ball with an applied test force of 1000 N (~100 kgf).</p><p>The test parameters used throughout the study are summarized below.</p>								</div>
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															<img decoding="async" width="1026" height="683" src="https://nanovea.com/wp-content/uploads/2026/08/high-temperature-hardness-testing-t2000-heated-chamber.jpg" class="attachment-full size-full wp-image-26564" alt="Steel sample mounted inside the NANOVEA T2000 high temperature chamber for Brinell hardness testing" />															</div>
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									<p>Steel sample mounted in the NANOVEA T2000 high temperature chamber for Brinell hardness testing from 25°C to 925°C.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Test Parameters</h2>				</div>
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<table class="measurement-table">
<thead>
<tr>
<th>Test Parameter</th>
<th>High Temperature Brinell Hardness Setup</th>
</tr>
</thead>
<tbody>
<tr>
<td>Temperatura</td>
<td>25, 200, 400, 600, 800, 925°C</td>
</tr>
<tr>
<td>Test force</td>
<td>1000 N (~100 kgf)</td>
</tr>
<tr>
<td>Force-diameter ratio</td>
<td>1</td>
</tr>
<tr>
<td>Ball material</td>
<td>Tungsten carbide (WC)</td>
</tr>
<tr>
<td>Ball diameter</td>
<td>10 mm</td>
</tr>
</tbody>
</table>
</div>								</div>
				</div>
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															<img loading="lazy" decoding="async" width="1200" height="618" src="https://nanovea.com/wp-content/uploads/2026/08/high-temperature-hardness-testing-steel-samples.jpg" class="attachment-full size-full wp-image-26565" alt="Steel samples used for high temperature Brinell hardness testing from 25°C to 925°C" />															</div>
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									<p>Steel samples used in the high temperature Brinell hardness study from room temperature to 925°C.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Resultados y debate</h2>				</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-55f91f5 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="55f91f5" data-element_type="section">
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									<p class="isSelectedEnd">Brinell hardness was calculated from the applied force, ball diameter, and measured indentation diameter using the equation below:</p>								</div>
				</div>
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															<img loading="lazy" decoding="async" width="964" height="352" src="https://nanovea.com/wp-content/uploads/2026/08/brinell-hardness-equation.jpg" class="attachment-full size-full wp-image-26567" alt="Brinell hardness equation using applied force, ball diameter, and measured indentation diameter" />															</div>
				</div>
				<div class="elementor-element elementor-element-8401aeb elementor-widget elementor-widget-text-editor" data-id="8401aeb" data-element_type="widget" data-widget_type="text-editor.default">
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									<p class="isSelectedEnd">Where F (kgf) is the applied force expressed in kilogram-force, D is the ball diameter, and d is the measured indentation diameter. Two diameter measurements were taken for each indent and averaged to determine the value of d used in the hardness calculation.</p>								</div>
				</div>
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															<img loading="lazy" decoding="async" width="1045" height="597" src="https://nanovea.com/wp-content/uploads/2026/08/high-temperature-brinell-hardness-load-time-curve.jpg" class="attachment-full size-full wp-image-26568" alt="Load versus time curve showing the 1000 N indentation load used during high temperature Brinell hardness testing of steel" />															</div>
				</div>
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									<p>Load vs. time profile for the 1000 N Brinell indentations performed during high temperature hardness testing.</p>								</div>
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									<p class="isSelectedEnd">The loading curve shows the applied load profile used during indentation. A consistent 1000 N (~100 kgf) test force was used throughout the temperature series so that the resulting indentation dimensions and calculated hardness values could be compared across each test condition.</p>								</div>
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															<img loading="lazy" decoding="async" width="865" height="872" src="https://nanovea.com/wp-content/uploads/2026/08/high-temperature-brinell-hardness-indentation-800c.jpg" class="attachment-full size-full wp-image-26569" alt="Brinell indentation on steel measured at 800°C with diameters of 1.807 mm and 1.830 mm" />															</div>
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				<div class="elementor-element elementor-element-b802905 elementor-widget elementor-widget-text-editor" data-id="b802905" data-element_type="widget" data-widget_type="text-editor.default">
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<table class="measurement-table">
<thead>
<tr>
<th>Distance</th>
<th>Unit</th>
<th>A</th>
<th>B</th>
</tr>
</thead>
<tbody>
<tr>
<td>HDist</td>
<td>mm</td>
<td>1.807</td>
<td>1.830</td>
</tr>
</tbody>
</table>
</div>								</div>
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									<p>Brinell indentation measured at 800°C. Two diameter measurements of 1.807 mm and 1.830 mm were averaged to determine the indentation diameter used for hardness calculation.</p>								</div>
				</div>
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									<p class="isSelectedEnd">At 800°C, the measured indentation diameters were 1.807 mm and 1.830 mm, producing an average diameter of approximately 1.819 mm. The indentation diameter increased substantially at the higher test temperatures as the steel became softer under the same applied load.</p><p>The measured indentation diameters were then used to calculate Brinell hardness at each temperature. The results show a relatively gradual decrease from 96.12 HBW at 25°C to 79.69 HBW at 600°C, followed by a much sharper decrease to 38.18 HBW at 800°C and 15.40 HBW at 925°C.</p>								</div>
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		</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-0284660 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="0284660" data-element_type="section">
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					<h4 class="elementor-heading-title elementor-size-default">Brinell Hardness Results</h4>				</div>
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				<div class="elementor-element elementor-element-3d7472e elementor-widget elementor-widget-text-editor" data-id="3d7472e" data-element_type="widget" data-widget_type="text-editor.default">
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									<div class="measurement-table-wrapper">
<table class="measurement-table pore-statistics-table">
<tbody>
<tr class="section-header">
<td colspan="5">High Temperature Brinell Hardness Results</td>
</tr>
<tr>
<th>Temperature (°C)</th>
<th>Diameter 1 (mm)</th>
<th>Diameter 2 (mm)</th>
<th>Average Diameter (mm)</th>
<th>HBW (10/100)</th>
</tr>
<tr>
<td>25</td>
<td>1.153</td>
<td>1.145</td>
<td>1.149</td>
<td>96.12</td>
</tr>
<tr>
<td>200</td>
<td>1.150</td>
<td>1.201</td>
<td>1.176</td>
<td>91.82</td>
</tr>
<tr>
<td>400</td>
<td>1.165</td>
<td>1.261</td>
<td>1.213</td>
<td>86.21</td>
</tr>
<tr>
<td>600</td>
<td>1.265</td>
<td>1.258</td>
<td>1.262</td>
<td>79.69</td>
</tr>
<tr>
<td>800</td>
<td>1.807</td>
<td>1.830</td>
<td>1.819</td>
<td>38.18</td>
</tr>
<tr>
<td>925</td>
<td>2.858</td>
<td>2.833</td>
<td>2.846</td>
<td>15.40</td>
</tr>
</tbody>
</table>
</div>								</div>
				</div>
				<div class="elementor-element elementor-element-a0c9cbf elementor-widget elementor-widget-image" data-id="a0c9cbf" data-element_type="widget" data-widget_type="image.default">
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															<img loading="lazy" decoding="async" width="1200" height="672" src="https://nanovea.com/wp-content/uploads/2026/08/high-temperature-hardness-testing-brinell-hardness-vs-temperature-graph.jpg" class="attachment-full size-full wp-image-26570" alt="Graph showing Brinell hardness of steel decreasing from 96.12 HBW at 25°C to 15.40 HBW at 925°C" />															</div>
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									<p class="isSelectedEnd">The temperature-dependent trend is clear. Steel hardness decreased moderately between room temperature and 600°C, then declined rapidly at higher temperatures. Between 25°C and 925°C, the measured Brinell hardness decreased from 96.12 to 15.40 HBW, representing an overall hardness loss of approximately 84%.</p><p>These results demonstrate why hardness measured at room temperature alone may not fully represent material behavior in high-temperature applications. For this steel sample, the most substantial loss in hardness occurred above approximately 600°C.</p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-683f81e elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="683f81e" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default">Conclusión</h2>				</div>
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									<p class="isSelectedEnd">High temperature hardness testing revealed a strong temperature-dependent change in the Brinell hardness of the steel sample. Hardness decreased gradually as temperature increased from 25°C to 600°C, then declined much more sharply at higher temperatures. By 925°C, the measured hardness had fallen from 96.12 HBW to 15.40 HBW, representing an overall decrease of approximately 84%.</p><p class="isSelectedEnd">The study demonstrates the ability of the NANOVEA T2000 Tribometer to perform Brinell hardness measurements under elevated-temperature conditions. Using a 1000 N (~100 kgf) test force, the steel sample was evaluated from 25°C to 925°C, allowing its change in hardness to be measured directly across the tested temperature range.</p><p>The results also highlight the importance of selecting an appropriate force-diameter ratio across a wide temperature range. Because of the large difference in hardness between room temperature and high temperature, the study recommends a force-diameter ratio of 5 or 10 at lower temperatures, while a ratio of 1 is suitable above 900°C.</p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-a2dee8e elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="a2dee8e" data-element_type="section" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
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					<h2 class="elementor-heading-title elementor-size-default">Frequently Asked Questions About High Temperature Hardness Testing</h2>				</div>
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				<div class="elementor-element elementor-element-596af01 elementor-widget elementor-widget-heading" data-id="596af01" data-element_type="widget" data-widget_type="heading.default">
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					<h3 class="elementor-heading-title elementor-size-default">What is high temperature hardness testing used for?</h3>				</div>
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									<p data-start="168" data-end="494">High temperature hardness testing evaluates how a material’s resistance to indentation changes as temperature increases. It is useful for materials intended for thermally demanding applications where room-temperature hardness may not represent mechanical behavior at operating temperature.</p>								</div>
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				<div class="elementor-element elementor-element-cbcfaa4 elementor-widget elementor-widget-heading" data-id="cbcfaa4" data-element_type="widget" data-widget_type="heading.default">
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					<h3 class="elementor-heading-title elementor-size-default">Can Brinell hardness be measured at elevated temperatures?</h3>				</div>
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									<p data-start="658" data-end="746">Yes. Elevated-temperature Brinell hardness testing applies a controlled force using a ball of known diameter while the specimen is heated to the required test temperature. In this study, steel was tested from 25°C to 925°C using a 10 mm tungsten carbide ball and a 1000 N test force.</p>								</div>
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				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">Why measure hardness while the material is hot?</h3>				</div>
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				<div class="elementor-element elementor-element-e60fcb6 elementor-widget elementor-widget-text-editor" data-id="e60fcb6" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="168" data-end="494">Testing at temperature measures hardness under the thermal condition of interest rather than only after the specimen returns to room temperature. This makes it possible to directly characterize temperature-dependent softening and identify changes that may not be represented by room-temperature hardness values.</p>								</div>
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				<div class="elementor-element elementor-element-2ae518f elementor-widget elementor-widget-heading" data-id="2ae518f" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h3 class="elementor-heading-title elementor-size-default">What equipment is used for high temperature hardness testing?</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-1d77659 elementor-widget elementor-widget-text-editor" data-id="1d77659" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="168" data-end="494">High temperature hardness testing requires controlled specimen heating, precise mechanical loading and measurement of the resulting indentation. The NANOVEA T2000 can integrate high-temperature environmental control with mechanical testing for evaluating material behavior under elevated-temperature conditions.</p>								</div>
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				<div class="elementor-element elementor-element-3d372dd elementor-widget elementor-widget-heading" data-id="3d372dd" data-element_type="widget" data-widget_type="heading.default">
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					<h3 class="elementor-heading-title elementor-size-default">Can high temperature hardness testing be used for aerospace materials?</h3>				</div>
				</div>
				<div class="elementor-element elementor-element-b1dd455 elementor-widget elementor-widget-text-editor" data-id="b1dd455" data-element_type="widget" data-widget_type="text-editor.default">
				<div class="elementor-widget-container">
									<p data-start="168" data-end="494">Yes. Elevated-temperature hardness measurements are relevant when evaluating materials intended for thermally demanding aerospace environments, including jet-engine and other high-temperature components. Testing helps characterize how hardness changes as exposure temperature increases.</p>								</div>
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				<div class="elementor-element elementor-element-5cbc604 elementor-widget elementor-widget-heading" data-id="5cbc604" data-element_type="widget" data-widget_type="heading.default">
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					<h3 class="elementor-heading-title elementor-size-default">Can NANOVEA perform high temperature hardness testing as a laboratory service?</h3>				</div>
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				<div class="elementor-element elementor-element-82a2d66 elementor-widget elementor-widget-text-editor" data-id="82a2d66" data-element_type="widget" data-widget_type="text-editor.default">
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									<p data-start="168" data-end="494">NANOVEA provides materials testing services using its mechanical testing and tribology platforms. Application requirements, temperature range, load, specimen geometry and measurement method can be reviewed with a NANOVEA applications engineer to determine an appropriate high-temperature testing approach.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">Need High Temperature Hardness Testing for Your Material?</h2>				</div>
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				</div><p>The post <a href="https://nanovea.com/es/high-temperature-hardness-testing-of-steel/">High Temperature Brinell Hardness Testing</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Dureza al rayado a alta temperatura utilizando un tribómetro</title>
		<link>https://nanovea.com/es/dureza-de-los-aranazos-a-alta-temperatura-utilizando-un-tribometro/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=high-temperature-scratch-hardness-using-a-tribometer</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubDate>Thu, 14 Jul 2022 16:56:16 +0000</pubDate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[High Temperature Mechanical Testing]]></category>
		<category><![CDATA[High Temperature Tribology]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Mechanical Testing]]></category>
		<category><![CDATA[Scratch Testing | Scratch Hardness]]></category>
		<category><![CDATA[Scratch Testing Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=21189</guid>

					<description><![CDATA[<p>HIGH TEMPERATURE SCRATCH HARDNESS USING A TRIBOMETER Prepared by DUANJIE, PhD INTRODUCTION Hardness measures the resistance of materials to permanent or plastic deformation. Originally developed by a German mineralogist Friedrich Mohs in 1820, scratch hardness test determines the hardness of a material to scratches and abrasion due to friction from a sharp object1. The Mohs&#8217; [&#8230;]</p>
<p>The post <a href="https://nanovea.com/es/dureza-de-los-aranazos-a-alta-temperatura-utilizando-un-tribometro/">High Temperature Scratch Hardness using a Tribometer</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="21189" class="elementor elementor-21189" data-elementor-post-type="post">
						<section class="elementor-section elementor-top-section elementor-element elementor-element-7ec3d48 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="7ec3d48" data-element_type="section">
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					<h1 class="elementor-heading-title elementor-size-default">DUREZA AL RAYADO A ALTA TEMPERATURA</h1>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">UTILIZANDO UN TRIBÓMETRO</h2>				</div>
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															<img loading="lazy" decoding="async" width="768" height="217" src="https://nanovea.com/wp-content/uploads/2022/07/High-Temperature-Tribology.jpg" class="attachment-medium_large size-medium_large wp-image-21179" alt="" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Preparado por</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">DUANJIE, Doctor</h2>				</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-753c1f3 elementor-section-content-middle elementor-reverse-mobile elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="753c1f3" data-element_type="section" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUCCIÓN</h2>				</div>
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									<p>La dureza mide la resistencia de los materiales a la deformación permanente o plástica. Desarrollado originalmente por el mineralogista alemán Friedrich Mohs en 1820, el ensayo de dureza al rayado determina la dureza de un material a los arañazos y la abrasión debidos a la fricción de un objeto afilado.<sup>1</sup>. La escala de Mohs es un índice comparativo más que una escala lineal, por lo que se desarrolló una medición de la dureza al rayado más precisa y cualitativa, tal como se describe en la norma ASTM G171-03<sup>2</sup>. Mide la anchura media del arañazo creado por un estilete de diamante y calcula el número de dureza del arañazo (HSP).</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">IMPORTANCIA DE LA MEDICIÓN DE LA DUREZA AL RAYADO A ALTAS TEMPERATURAS</h2>				</div>
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									<p>Los materiales se seleccionan en función de los requisitos de servicio. Para aplicaciones que implican cambios de temperatura y gradientes térmicos significativos, es fundamental investigar las propiedades mecánicas de los materiales a altas temperaturas para conocer a fondo los límites mecánicos. Los materiales, especialmente los polímeros, suelen ablandarse a altas temperaturas. Muchos fallos mecánicos se deben a la deformación por fluencia y a la fatiga térmica que sólo tienen lugar a temperaturas elevadas. Por lo tanto, se necesita una técnica fiable para medir la dureza a altas temperaturas con el fin de garantizar una selección adecuada de los materiales para aplicaciones a altas temperaturas.</p>								</div>
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									<p style="text-align: left;">OBJETIVO DE MEDICIÓN</p>								</div>
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									<p>En este estudio, el Tribómetro NANOVEA T50 mide la dureza al rayado de una muestra de teflón a diferentes temperaturas, desde temperatura ambiente hasta 300ºC. La capacidad de realizar mediciones de dureza al rayado a alta temperatura hace que el NANOVEA <a href="https://nanovea.com/tribometers/">Tribómetro </a>un sistema versátil para evaluaciones tribológicas y mecánicas de materiales para aplicaciones de alta temperatura.</p>								</div>
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									<p style="text-align: left;">NANOVEA</p>								</div>
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									<p style="text-align: left;">T50</p>								</div>
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									<span class="elementor-button-text">SABER MÁS</span>
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																<a href="https://nanovea.com/instruments/t50">
							<img loading="lazy" decoding="async" width="705" height="695" src="https://nanovea.com/wp-content/uploads/2020/12/Robust-Tribometer-Nanovea-T50.png" class="elementor-animation-grow attachment-medium_large size-medium_large wp-image-9876" alt="" />								</a>
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					<h2 class="elementor-heading-title elementor-size-default">CONDICIONES DE ENSAYO</h2>				</div>
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									<p>Se utilizó el tribómetro estándar de peso libre NANOVEA T50 para realizar los ensayos de dureza al rayado en una muestra de teflón a temperaturas que oscilaban entre la temperatura ambiente (TA) y 300°C. El teflón tiene un punto de fusión de 326,8°C. Se utilizó un palpador cónico de diamante con un ángulo de vértice de 120° y un radio de punta de 200 µm. La muestra de teflón se fijó en la platina giratoria con una distancia de 10 mm al centro de la platina. La muestra se calentó en un horno y se probó a temperaturas de RT, 50°C, 100°C, 150°C, 200°C, 250°C y 300°C.</p>								</div>
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									<p style="text-align: center;">PARÁMETROS DE PRUEBA</p>								</div>
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									<p>de la medición de la dureza al rayado a alta temperatura</p>								</div>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">FUERZA NORMAL</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>2 N</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">VELOCIDAD DE DESLIZAMIENTO</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>1 mm/s</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">DISTANCIA DE DESLIZAMIENTO</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>8 mm por temperatura</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">ATMÓSFERA</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>Aire</strong></em></td>
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<td style="width: 50%; text-align: left;"><em><strong style="color: #1b96cf;">TEMPERATURA</strong></em></td>
<td style="width: 50%; text-align: right;"><em><strong>RT, 50°C, 100°C, 150°C, 200°C, 250°C, 300°C.</strong></em></td>
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															<img loading="lazy" decoding="async" width="758" height="514" src="https://nanovea.com/wp-content/uploads/2022/07/High-Temperature-Scratch-Hardness.jpg" class="attachment-large size-large wp-image-21178" alt="" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS Y DEBATE</h2>				</div>
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									<p style="text-align: left;">En la FIGURA 1 se muestran los perfiles de la pista de rayado de la muestra de teflón a diferentes temperaturas con el fin de comparar la dureza del rayado a diferentes temperaturas elevadas. La acumulación de material en los bordes de la pista de rayado se forma a medida que el palpador se desplaza con una carga constante de 2 N y penetra en la muestra de teflón, empujando y deformando el material de la pista de rayado hacia un lado.</p><p>Las huellas de rayado se examinaron al microscopio óptico como se muestra en la FIGURA 2. Las anchuras de las huellas de rayado medidas y los números de dureza de rayado (HSP) calculados se resumen en la FIGURA 3. En la FIGURA 3 se resumen y comparan las anchuras de las pistas de rayado medidas y los números de dureza de rayado (HSP) calculados. La anchura de la pista de rayado medida con el microscopio coincide con la medida con el NANOVEA Profiler: la muestra de teflón presenta una anchura de rayado mayor a temperaturas más altas. La anchura de la pista de rayado aumenta de 281 a 539 µm a medida que la temperatura se eleva de RT a 300oC, lo que resulta en una disminución de la HSP de 65 a 18 MPa.</p><p>La dureza al rayado a temperaturas elevadas puede medirse con alta precisión y repetibilidad utilizando el Tribómetro NANOVEA T50. Proporciona una solución alternativa a otras mediciones de dureza y convierte a los tribómetros NANOVEA en un sistema más completo para evaluaciones tribo-mecánicas exhaustivas a altas temperaturas.</p>								</div>
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															<img loading="lazy" decoding="async" width="980" height="783" src="https://nanovea.com/wp-content/uploads/2022/07/Scratch-Hardness-High-Temperature.jpg" class="attachment-large size-large wp-image-21182" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 1:</span><span class="fontstyle0" style="color: #1b96cf;"><span style="color: #000000;"><span class="fontstyle0"> </span>Perfiles de huellas de arañazos tras los ensayos de dureza al rayado a diferentes temperaturas.</span></p>								</div>
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															<img loading="lazy" decoding="async" width="460" height="403" src="https://nanovea.com/wp-content/uploads/2022/07/High-Temperature-Scratch-Hardness-Test.jpg" class="attachment-large size-large wp-image-21175" alt="" />															</div>
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															<img loading="lazy" decoding="async" width="459" height="403" src="https://nanovea.com/wp-content/uploads/2022/07/High-Temperature-Scratch-Hardness-Testing.jpg" class="attachment-large size-large wp-image-21177" alt="" />															</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 2:</span><span class="fontstyle0" style="color: #000000;"> Huellas de arañazos bajo el microscopio tras las mediciones a diferentes temperaturas.</span></p>								</div>
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									<p style="text-align: center;"><span class="fontstyle0" style="color: #1b96cf;">FIGURA 3:</span><span class="fontstyle0" style="color: #000000;"> Evolución de la anchura de la pista de rayado y de la dureza del rayado en función de la temperatura.</span></p>								</div>
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									<p>En este estudio, mostramos cómo el tribómetro NANOVEA mide la dureza al rayado a temperaturas elevadas de conformidad con la norma ASTM G171-03. El ensayo de dureza al rayado con carga constante proporciona una solución alternativa sencilla para comparar la dureza de los materiales utilizando el tribómetro. La capacidad de realizar mediciones de dureza al rayado a temperaturas elevadas convierte al Tribómetro NANOVEA en una herramienta ideal para evaluar las propiedades tribo-mecánicas de los materiales a altas temperaturas.</p><p>El tribómetro NANOVEA también ofrece pruebas de desgaste y fricción precisas y repetibles mediante modos rotativos y lineales conformes con ISO y ASTM, con módulos opcionales de desgaste a alta temperatura, lubricación y tribo-corrosión disponibles en un sistema preintegrado. Hay disponible un perfilador 3D sin contacto opcional para obtener imágenes 3D de alta resolución de las huellas de desgaste, además de otras mediciones de superficies como la rugosidad.</p>								</div>
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									<p><span class="fontstyle0">1 </span><span class="fontstyle2">Wredenberg, Fredrik; PL Larsson (2009). "Ensayo de rayado de metales y polímeros: Experiments and numerics". Wear 266 (1-2): 76<br></span><span class="fontstyle0">2 </span><span class="fontstyle2">ASTM G171-03 (2009), "Standard Test Method for Scratch Hardness of Materials Using a Diamond Stylus" (Método de ensayo estándar para la dureza al rayado de materiales utilizando un estilete de diamante).</span> </p>								</div>
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				</div><p>The post <a href="https://nanovea.com/es/dureza-de-los-aranazos-a-alta-temperatura-utilizando-un-tribometro/">High Temperature Scratch Hardness using a Tribometer</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Medición del desgaste in situ a alta temperatura</title>
		<link>https://nanovea.com/es/medicion-del-desgaste-in-situ-a-alta-temperatura/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=in-situ-wear-measurement-at-high-temperature</link>
					<comments>https://nanovea.com/es/medicion-del-desgaste-in-situ-a-alta-temperatura/#respond</comments>
		
		<dc:creator><![CDATA[Andrew Shore]]></dc:creator>
		<pubDate>Tue, 29 Dec 2020 22:20:45 +0000</pubDate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[High Temperature Tribology]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Rotational Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=10121</guid>

					<description><![CDATA[<p>IN SITU WEAR MEASUREMENT AT HIGH TEMPERATURE USING TRIBOMETER Prepared by Duanjie Li, PhD INTRODUCTION The Linear Variable Differential Transformer (LVDT) is a type of robust electrical transformer used to measure linear displacement. It has been widely used in a variety of industrial applications, including power turbines, hydraulics, automation, aircraft, satellites, nuclear reactors, and many [&#8230;]</p>
<p>The post <a href="https://nanovea.com/es/medicion-del-desgaste-in-situ-a-alta-temperatura/">In Situ Wear Measurement at High Temperature</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="10121" class="elementor elementor-10121" data-elementor-post-type="post">
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					<h2 class="elementor-heading-title elementor-size-default">MEDICIÓN DEL DESGASTE IN SITU A ALTA TEMPERATURA</h2>				</div>
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															<img loading="lazy" decoding="async" width="1024" height="302" src="https://nanovea.com/wp-content/uploads/2020/12/IN-SITU-WEAR-MEASUREMENT-Aerospace-Tribology.png" class="attachment-large size-large wp-image-9629" alt="MEDICIÓN DEL DESGASTE IN SITU Tribómetro aeroespacial" />															</div>
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					<h2 class="elementor-heading-title elementor-size-default">Preparado por</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">Doctor Duanjie Li</h2>				</div>
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					<h2 class="elementor-heading-title elementor-size-default">INTRODUCCIÓN</h2>				</div>
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									<p>El transformador diferencial variable lineal (LVDT) es un tipo de transformador eléctrico robusto que se utiliza para medir el desplazamiento lineal. Se ha utilizado ampliamente en una gran variedad de aplicaciones industriales, entre las que se incluyen turbinas eléctricas, sistemas hidráulicos, automatización, aeronáutica, satélites, reactores nucleares y muchas otras.</p>
<p>En este estudio, presentamos los complementos LVDT y los módulos para altas temperaturas de NANOVEA. <a href="https://nanovea.com/tribometers/">Tribómetro</a> que permiten medir el cambio en la profundidad de la huella de desgaste de la muestra sometida a prueba durante el proceso de desgaste a temperaturas elevadas. Esto permite a los usuarios correlacionar las diferentes etapas del proceso de desgaste con la evolución del COF, lo cual es fundamental para mejorar la comprensión básica del mecanismo de desgaste y las características tribológicas de los materiales para aplicaciones a altas temperaturas.</p>								</div>
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									<p>OBJETIVO DE MEDICIÓN</p>								</div>
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									<p><i>En este estudio, nos gustaría mostrar la capacidad del tribómetro NANOVEA T50 para monitorear in situ la evolución del proceso de desgaste de los materiales a temperaturas elevadas.</i></p><p><i>El proceso de desgaste de la cerámica de silicato de alúmina a diferentes temperaturas se simula de manera controlada y supervisada.</i></p>								</div>
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									<p>NANOVEA</p>								</div>
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									<p>T50</p>								</div>
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																<a href="https://nanovea.com/instruments/t50/">
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					<h2 class="elementor-heading-title elementor-size-default">PROCEDIMIENTO DE PRUEBA</h2>				</div>
				</div>
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									<p>El comportamiento tribológico, por ejemplo, el coeficiente de fricción (COF) y la resistencia al desgaste de las placas cerámicas de silicato de alúmina, se evaluó con el tribómetro NANOVEA. La placa cerámica de silicato de alúmina se calentó en un horno desde temperatura ambiente (TA) hasta temperaturas elevadas (400 °C y 800 °C), y a continuación se realizaron ensayos de desgaste a dichas temperaturas. </p><p><span style="color: var( --e-global-color-text );">A modo de comparación, las pruebas de desgaste se llevaron a cabo cuando la muestra se enfrió de 800 °C a 400 °C y, posteriormente, a temperatura ambiente. Se aplicó una punta de bola de AI2O3 (6 mm de diámetro, grado 100) contra las muestras sometidas a prueba. Se supervisaron in situ el COF, la profundidad de desgaste y la temperatura.</span></p>								</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-e62194a elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="e62194a" data-element_type="section">
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					<h2 class="elementor-heading-title elementor-size-default"><i>PARÁMETROS DE PRUEBA</i></h2>				</div>
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				<div class="elementor-element elementor-element-7df685c elementor-widget elementor-widget-heading" data-id="7df685c" data-element_type="widget" data-widget_type="heading.default">
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					<h2 class="elementor-heading-title elementor-size-default">de la medición del pin sobre disco</h2>				</div>
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															<img loading="lazy" decoding="async" width="783" height="150" src="https://nanovea.com/wp-content/uploads/2020/12/Test-parameters-of-the-pin-on-disk-measurement-09.png" class="attachment-large size-large wp-image-9647" alt="" />															</div>
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															<img loading="lazy" decoding="async" width="461" height="436" src="https://nanovea.com/wp-content/uploads/2020/12/Tribometer-Sample-LVDT.png" class="attachment-large size-large wp-image-9644" alt="Tribómetro LVDT Muestra" />															</div>
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		</section>
				<section class="elementor-section elementor-top-section elementor-element elementor-element-daca6c8 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="daca6c8" data-element_type="section">
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									<p>La tasa de desgaste, K, se evaluó utilizando la fórmula K=V/(Fxs)=A/(Fxn), donde V es el volumen desgastado, F es la carga normal, s es la distancia de deslizamiento, A es el área transversal de la huella de desgaste y n es el número de revoluciones. La rugosidad de la superficie y los perfiles de las huellas de desgaste se evaluaron con el perfilómetro óptico NANOVEA, y la morfología de las huellas de desgaste se examinó con un microscopio óptico.</p>								</div>
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					<h2 class="elementor-heading-title elementor-size-default">RESULTADOS Y DEBATE</h2>				</div>
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									<p>El COF y la profundidad de la huella de desgaste registrados in situ se muestran en la FIGURA 1 y la FIGURA 2, respectivamente. En la FIGURA 1, “-I” indica la prueba realizada cuando la temperatura se incrementó desde la temperatura ambiente hasta una temperatura elevada. “-D” representa la temperatura disminuida desde una temperatura más alta de 800 °C.</p><p><span style="color: var( --e-global-color-text );">Como se muestra en la FIGURA 1, las muestras probadas a diferentes temperaturas presentan un COF comparable de ~0,6 en todas las mediciones. Un COF tan alto provoca un proceso de desgaste acelerado que genera una cantidad considerable de residuos. La profundidad de la huella de desgaste se supervisó durante las pruebas de desgaste mediante LVDT, como se muestra en la FIGURA 2. Las pruebas realizadas a temperatura ambiente antes del calentamiento de la muestra y después de su enfriamiento muestran que la placa cerámica de silicato de alúmina presenta un proceso de desgaste progresivo a temperatura ambiente, y que la profundidad de la huella de desgaste aumenta gradualmente a lo largo de la prueba de desgaste hasta ~170 y ~150 μm, respectivamente. </span></p><p><span style="color: var( --e-global-color-text );">En comparación, las pruebas de desgaste a temperaturas elevadas (400 °C y 800 °C) muestran un comportamiento de desgaste diferente: la profundidad de la huella de desgaste aumenta rápidamente al inicio del proceso de desgaste y se ralentiza a medida que avanza la prueba. Las profundidades de las marcas de desgaste para las pruebas realizadas a temperaturas de 400 °C-I, 800 °C y 400 °C-D son de aproximadamente 140, 350 y 210 μm, respectivamente.</span></p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-383bb84 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="383bb84" data-element_type="section">
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															<img loading="lazy" decoding="async" width="1024" height="785" src="https://nanovea.com/wp-content/uploads/2020/12/Coefficient-of-Friction-during-pin-on-desk-Tests-at-different-temperatures.png" class="attachment-large size-large wp-image-9954" alt="COF durante pruebas con pin sobre escritorio a diferentes temperaturas" />															</div>
				</div>
				<div class="elementor-element elementor-element-54788e7 elementor-widget elementor-widget-heading" data-id="54788e7" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default"><b><i>FIGURA 1. </i></b>
<span>Coeficiente de fricción durante pruebas de clavija sobre disco a diferentes temperaturas</span></h2>				</div>
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					</div>
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															<img loading="lazy" decoding="async" width="1024" height="799" src="https://nanovea.com/wp-content/uploads/2020/12/Evolution-of-wear-track-depth-of-the-alumina-silicate-ceramic-plate-at-different-temperatures.png" class="attachment-large size-large wp-image-9955" alt="Profundidad de desgaste de la placa cerámica de silicato de alúmina a diferentes temperaturas" />															</div>
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				<div class="elementor-element elementor-element-7b1b5d2 elementor-widget elementor-widget-heading" data-id="7b1b5d2" data-element_type="widget" data-widget_type="heading.default">
				<div class="elementor-widget-container">
					<h2 class="elementor-heading-title elementor-size-default"><b><i>FIGURA 2. </i></b>
<span>Evolución de la profundidad de la huella de desgaste de la placa cerámica de silicato de alúmina a diferentes temperaturas.</span> 
<br style="line-height: normal;text-align: -webkit-auto">
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									<p>Se midieron la tasa de desgaste promedio y la profundidad de la huella de desgaste de las placas de cerámica de silicato de alúmina a diferentes temperaturas utilizando <b><i>NANOVEA</i></b> Perfilómetro óptico, tal y como se resume en <b><i>FIGURA 3</i></b>. La profundidad de la huella de desgaste coincide con la registrada mediante LVDT. La placa cerámica de silicato de alúmina muestra una tasa de desgaste sustancialmente mayor, de ~0,5 mm3/Nm a 800 °C, en comparación con las tasas de desgaste inferiores a 0,2 mm3/N a temperaturas inferiores a 400 °C. La placa cerámica de silicato de alúmina no muestra una mejora significativa de sus propiedades mecánicas/tribológicas tras el breve proceso de calentamiento, ya que presenta una tasa de desgaste comparable antes y después del tratamiento térmico.</p><p><span style="color: var( --e-global-color-text );">La cerámica de silicato de alúmina, también conocida como lava y piedra maravillosa, es blanda y mecanizable antes del tratamiento térmico. Un largo proceso de cocción a temperaturas elevadas de hasta 1093 °C puede mejorar sustancialmente su dureza y resistencia, tras lo cual se requiere un mecanizado con diamante. Esta característica única hace que la cerámica de silicato de alúmina sea un material ideal para la escultura.</span></p><p>En este estudio, demostramos que el tratamiento térmico a una temperatura inferior a la requerida para la cocción (800 °C frente a 1093 °C) en un tiempo breve no mejora las características mecánicas y tribológicas de la cerámica de silicato de alúmina, lo que hace que la cocción adecuada sea un proceso esencial para este material antes de su uso en aplicaciones reales.</p><div> </div>								</div>
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															<img loading="lazy" decoding="async" width="1687" height="1211" src="https://nanovea.com/wp-content/uploads/2020/12/Wear-rate-and-wear-track-depth-of-the-sample-at-different-temperatures.png" class="attachment-full size-full wp-image-9962" alt="Tasa de desgaste y profundidad de la huella de desgaste de la muestra a diferentes temperaturas 1" />															</div>
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				<div class="elementor-element elementor-element-85de02e elementor-widget elementor-widget-heading" data-id="85de02e" data-element_type="widget" data-widget_type="heading.default">
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					<h2 class="elementor-heading-title elementor-size-default"><b><i>FIGURA 3. </i></b>
Tasa de desgaste y profundidad de la huella de desgaste de la muestra a diferentes temperaturas.</h2>				</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-a218831 elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="a218831" data-element_type="section" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
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					<h2 class="elementor-heading-title elementor-size-default">CONCLUSIÓN</h2>				</div>
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									<p>Basándonos en el análisis tribológico exhaustivo realizado en este estudio, demostramos que la placa cerámica de silicato de alúmina presenta un coeficiente de fricción comparable a diferentes temperaturas, desde la temperatura ambiente hasta los 800 °C. Sin embargo, muestra un aumento sustancial de la tasa de desgaste de ~0,5 mm3/Nm a 800 °C, lo que demuestra la importancia de un tratamiento térmico adecuado de esta cerámica.</p><p>Los tribómetros NANOVEA son capaces de evaluar las propiedades tribológicas de los materiales para aplicaciones a altas temperaturas de hasta 1000 °C. La función de medición in situ del coeficiente de fricción (COF) y la profundidad de la huella de desgaste permite a los usuarios correlacionar las diferentes etapas del proceso de desgaste con la evolución del COF, lo cual es fundamental para mejorar la comprensión básica del mecanismo de desgaste y las características tribológicas de los materiales utilizados a temperaturas elevadas.</p>								</div>
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				<section class="elementor-section elementor-top-section elementor-element elementor-element-0dd5029 elementor-section-content-middle elementor-section-boxed elementor-section-height-default elementor-section-height-default" data-id="0dd5029" data-element_type="section" data-settings="{&quot;background_background&quot;:&quot;classic&quot;}">
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									<p>Los tribómetros NANOVEA ofrecen pruebas de desgaste y fricción precisas y repetibles utilizando modos rotativos y lineales que cumplen con las normas ISO y ASTM, con módulos opcionales de desgaste a alta temperatura, lubricación y tribocorrosión disponibles en un sistema preintegrado. La inigualable gama de NANOVEA es una solución ideal para determinar toda la gama de propiedades tribológicas de recubrimientos, películas y sustratos delgados o gruesos, blandos o duros.</p><p>Hay disponibles perfiladores 3D sin contacto opcionales para obtener imágenes 3D de alta resolución de las huellas de desgaste, además de otras mediciones superficiales, como la rugosidad.</p>								</div>
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															<img loading="lazy" decoding="async" width="546" height="308" src="https://nanovea.com/wp-content/uploads/2020/12/IN-SITU-WEAR-MEASUREMENT-1-1.jpg" class="attachment-large size-large wp-image-9973" alt="MEDICIÓN DEL DESGASTE IN SITU" />															</div>
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				</div><p>The post <a href="https://nanovea.com/es/medicion-del-desgaste-in-situ-a-alta-temperatura/">In Situ Wear Measurement at High Temperature</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Rotative or Linear Wear &#038; COF? (A Comprehensive Study Using the Nanovea Tribometer)</title>
		<link>https://nanovea.com/es/el-desgaste-rotativo-o-lineal-de-un-estudio-exhaustivo-con-el-tribometro-de-nanovea/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=rotative-or-linear-wear-cof-a-comprehensive-study-using-the-nanovea-tribometer</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubDate>Wed, 10 Jul 2019 20:42:37 +0000</pubDate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[High Temperature Tribology]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Linear Tribology]]></category>
		<category><![CDATA[Profilometry | Step Height and Thickness]]></category>
		<category><![CDATA[Profilometry | Volume and Area]]></category>
		<category><![CDATA[Profilometry Testing]]></category>
		<category><![CDATA[Rotational Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=6388</guid>

					<description><![CDATA[<p>Wear is the process of removal and deformation of material on a surface as a result of the mechanical action of the opposite surface. It is influenced by a variety of factors, including unidirectional sliding, rolling, speed, temperature, and many others. The study of wear, tribology, spans many disciplines, from physics and chemistry to mechanical [&#8230;]</p>
<p>The post <a href="https://nanovea.com/es/el-desgaste-rotativo-o-lineal-de-un-estudio-exhaustivo-con-el-tribometro-de-nanovea/">Rotative or Linear Wear &#038; COF? (A Comprehensive Study Using the Nanovea Tribometer)</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>El desgaste es el proceso de eliminación y deformación de material en una superficie como resultado de la acción mecánica de la superficie opuesta. En él influyen diversos factores, como el deslizamiento unidireccional, la rodadura, la velocidad, la temperatura y muchos otros. El estudio del desgaste, la tribología, abarca muchas disciplinas, desde la física y la química hasta la ingeniería mecánica y la ciencia de los materiales. La compleja naturaleza del desgaste requiere estudios aislados sobre mecanismos o procesos de desgaste específicos, como el desgaste adhesivo, el desgaste abrasivo, la fatiga superficial, el desgaste por rozamiento y el desgaste erosivo. Sin embargo, el "desgaste industrial" suele implicar múltiples mecanismos de desgaste que se producen en sinergia.</p>
<p>Los ensayos de desgaste lineal alternativo y rotativo (clavija sobre disco) son dos configuraciones ampliamente utilizadas de conformidad con ASTM para medir los comportamientos de desgaste por deslizamiento de los materiales. Dado que el valor de la tasa de desgaste de cualquier método de ensayo de desgaste se utiliza a menudo para predecir la clasificación relativa de las combinaciones de materiales, es extremadamente importante confirmar la repetibilidad de la tasa de desgaste medida utilizando diferentes configuraciones de ensayo. Esto permite a los usuarios considerar cuidadosamente el valor de la tasa de desgaste reportado en la literatura, lo cual es crítico para entender las características tribológicas de los materiales.</p>
<p><a href="http://nanovea.com/App-Notes/rotative-and-linear-wear.pdf"><img loading="lazy" decoding="async" class="alignnone wp-image-6389" src="https://nanovea.com/wp-content/uploads/2019/07/Tribo-Cover-FINAL-cof-2.jpg" alt="" width="274" height="264" /></a></p>
<p><a href="http://nanovea.com/App-Notes/rotative-and-linear-wear.pdf">Más información</a></p><p>The post <a href="https://nanovea.com/es/el-desgaste-rotativo-o-lineal-de-un-estudio-exhaustivo-con-el-tribometro-de-nanovea/">Rotative or Linear Wear &#038; COF? (A Comprehensive Study Using the Nanovea Tribometer)</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Evaluación de las pastillas de freno mediante tribología</title>
		<link>https://nanovea.com/es/evaluar-pastillas-de-freno-con-tribologia/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=evaluating-brake-pads-with-tribology</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubDate>Thu, 04 Apr 2019 20:44:04 +0000</pubDate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[High Temperature Tribology]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Linear Tribology]]></category>
		<category><![CDATA[Rotational Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<category><![CDATA[Uncategorized]]></category>
		<guid ispermalink="false">https://nanovea.com/?p=5022</guid>

					<description><![CDATA[<p>Importance of Evaluating Break Pad Performance Brake pads are composites., a material made up of multiple ingredients, that must be able to satisfy a large number of safety requirements. Ideal brake pads have high coefficient of friction (COF), low wear rate, minimal noise, and remain reliable under varying environments. To ensure the quality of brake [&#8230;]</p>
<p>The post <a href="https://nanovea.com/es/evaluar-pastillas-de-freno-con-tribologia/">Evaluating Brake Pads with Tribology</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<div data-elementor-type="wp-post" data-elementor-id="5022" class="elementor elementor-5022" data-elementor-post-type="post">
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									<p><br></p>
<p style="text-align: left; color: #1b96cf; font-size: 24px;">Importancia de evaluar el rendimiento de las almohadillas de freno<strong><u><i><br></i></u></strong></p>
<p>Las pastillas de freno son compuestos, un material formado por múltiples ingredientes, que debe ser capaz de satisfacer un gran número de requisitos de seguridad. Las pastillas de freno ideales tienen un alto coeficiente de fricción (COF), un bajo índice de desgaste, un ruido mínimo y siguen siendo fiables en entornos variables. Para garantizar que la calidad de las pastillas de freno es capaz de satisfacer sus requisitos, pueden utilizarse ensayos tribológicos para identificar las especificaciones críticas.<br><br><br>La importancia de la fiabilidad de las pastillas de freno es muy alta; nunca debe descuidarse la seguridad de los pasajeros. Por ello, es fundamental reproducir las condiciones de funcionamiento e identificar posibles puntos de fallo.<br>Con el Nanovea <a href="https://nanovea.com/tribometers/">Tribómetro</a>, se aplica una carga constante entre un pasador, bola o plano y un contramaterial en constante movimiento. La fricción entre los dos materiales se recoge con una célula de carga rígida, lo que permite recoger las propiedades del material a diferentes cargas y velocidades y probarlo en entornos de alta temperatura, corrosivos o líquidos.<br><br><br><br></p>
<p style="text-align: left; color: #1b96cf; font-size: 24px;">Objetivo de medición</p>
<p>En este estudio, se estudió el coeficiente de fricción de las pastillas de freno en un entorno de temperatura en continuo aumento desde la temperatura ambiente hasta 700°C. La temperatura ambiente se elevó in situ hasta que se observó un fallo apreciable de la pastilla de freno. Se colocó un termopar en la parte posterior de la clavija para medir la temperatura cerca de la interfaz de deslizamiento.</p>
<div style="text-align:center">
<div style="text-align: center;"><a href="https://nanovea.com/wp-content/uploads/2019/04/Sample-of-break-pad.png"><img loading="lazy" decoding="async" class="alignnone size-full wp-image-8130" src="https://nanovea.com/wp-content/uploads/2019/04/Sample-of-break-pad.png" alt="" width="1313" height="603"></a></div>
<p><br><br></p>
<p style="text-align: left; color: #1b96cf; font-size: 24px;">Procedimiento de ensayo y procedimientos<strong><u><i><br></i></u></strong></p>
<p><a href="https://nanovea.com/wp-content/uploads/2019/04/Table-1-1.png"><img loading="lazy" decoding="async" class="alignnone size-full wp-image-8129" src="https://nanovea.com/wp-content/uploads/2019/04/Table-1-1.png" alt="" width="775" height="576"></a></p>
<p><a href="https://nanovea.com/wp-content/uploads/2019/04/Brake-pad-sample.png"><img loading="lazy" decoding="async" class="size-full wp-image-8126 aligncenter" src="https://nanovea.com/wp-content/uploads/2019/04/Brake-pad-sample.png" alt="" width="546" height="484"></a>
</p>
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<p><br><br><br></p>
<p style="text-align: left; color: #1b96cf; font-size: 24px;">Resultados y debate<u><i></i></u></p>
<p style="margin: 0in; margin-bottom: .0001pt;"><span style="font-family: 'Arial',sans-serif;">Este estudio se centra principalmente en la temperatura a la que empiezan a fallar las pastillas de freno. Los COF obtenidos no representan valores reales; el material de las patillas no es el mismo que el de los rotores de freno. También debe tenerse en cuenta que los datos de temperatura recogidos corresponden a la temperatura de la clavija y no a la temperatura de la interfaz de deslizamiento.</span></p>
<p style="margin: 0in; margin-bottom: .0001pt;"><span style="font-family: 'Arial',sans-serif; color: #1c1e29;">&nbsp;</span></p>
<p><a href="https://nanovea.com/wp-content/uploads/2019/04/Figure-2-1.png"><img loading="lazy" decoding="async" class="alignnone size-full wp-image-8127" src="https://nanovea.com/wp-content/uploads/2019/04/Figure-2-1.png" alt="" width="1522" height="668"></a><br><br><br><br><a href="https://nanovea.com/wp-content/uploads/2019/04/Figure-3-1.png"><img loading="lazy" decoding="async" class="alignnone size-full wp-image-8128" src="https://nanovea.com/wp-content/uploads/2019/04/Figure-3-1.png" alt="" width="1153" height="752"></a><br><br><br>Al inicio de la prueba (temperatura ambiente), el COF entre el pasador SS440C y la pastilla de freno dio un valor constante de aproximadamente 0,2. A medida que aumentaba la temperatura, el COF aumentaba constantemente y alcanzaba un valor máximo de 0,26 cerca de 350°C. Por encima de 390°C, el COF empieza a disminuir rápidamente. El COF empezó a aumentar de nuevo hasta 0,2 a 450°C, pero poco después empezó a disminuir hasta un valor de 0,05.<br><br><br>La temperatura a la que fallaron sistemáticamente las pastillas de freno se identifica a temperaturas superiores a 500°C. Por encima de esta temperatura, el COF ya no era capaz de mantener el COF inicial de 0,2.<br><br><br><br></p>
<p style="text-align: left; color: #1b96cf; font-size: 24px;">Conclusión</p>
<p><a href="https://nanovea.com/wp-content/uploads/2019/04/brake-pad-temperature-tribology.jpg"><img loading="lazy" decoding="async" class="alignnone size-full wp-image-8134" src="https://nanovea.com/wp-content/uploads/2019/04/brake-pad-temperature-tribology.jpg" alt="" width="1216" height="812"></a><br><br><br>Las pastillas de freno han mostrado un fallo constante a una temperatura superior a 500°C. Su COF de 0,2 aumenta lentamente hasta un valor de 0,26 antes de descender a 0,05 al final de la prueba (580°C). La diferencia entre 0,05 y 0,2 es un factor de 4. ¡Esto significa que la fuerza normal a 580°C debe ser cuatro veces mayor que a temperatura ambiente para conseguir la misma fuerza de frenado!<br><br><br>Aunque no se incluye en este estudio, el tribómetro Nanovea también puede realizar pruebas para observar otra propiedad importante de las pastillas de freno: la velocidad de desgaste. Utilizando nuestros perfilómetros 3D sin contacto, se puede obtener el volumen de la huella de desgaste para calcular la rapidez con la que se desgastan las muestras. Las pruebas de desgaste pueden realizarse con el tribómetro Nanovea en diferentes condiciones y entornos de prueba para simular mejor las condiciones de funcionamiento.</p>								</div>
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				</div><p>The post <a href="https://nanovea.com/es/evaluar-pastillas-de-freno-con-tribologia/">Evaluating Brake Pads with Tribology</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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		<title>Dureza al rayado a alta temperatura mediante tribómetro</title>
		<link>https://nanovea.com/es/dureza-de-los-aranazos-a-alta-temperatura-utilizando-el-tribometro/?utm_source=rss&#038;utm_medium=rss&#038;utm_campaign=high-temperature-scratch-hardness-using-tribometer</link>
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		<dc:creator><![CDATA[nanovea]]></dc:creator>
		<pubDate>Tue, 24 Nov 2015 15:34:17 +0000</pubDate>
				<category><![CDATA[Application Notes]]></category>
		<category><![CDATA[High Temperature Mechanical Testing]]></category>
		<category><![CDATA[High Temperature Tribology]]></category>
		<category><![CDATA[Laboratory Testing]]></category>
		<category><![CDATA[Mechanical Testing]]></category>
		<category><![CDATA[Scratch Testing | Scratch Hardness]]></category>
		<category><![CDATA[Scratch Testing Tribology]]></category>
		<category><![CDATA[Tribology Testing]]></category>
		<category><![CDATA[high temperature]]></category>
		<category><![CDATA[scratch hardness]]></category>
		<category><![CDATA[tribology]]></category>
		<category><![CDATA[tribometer]]></category>
		<guid ispermalink="false">http://nanovea.com/?p=2139</guid>

					<description><![CDATA[<p>Materials are selected based on the service requirements. For applications involving significant temperature changes and thermal gradients, it is critical to investigate the mechanical properties of materials at high temperatures to be fully aware of the mechanical limits. Materials, especially polymers, usually soften at high temperatures. A lot of mechanical failures are caused by creep deformation [&#8230;]</p>
<p>The post <a href="https://nanovea.com/es/dureza-de-los-aranazos-a-alta-temperatura-utilizando-el-tribometro/">High Temperature Scratch Hardness Using Tribometer</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
]]></description>
										<content:encoded><![CDATA[<p>Los materiales se seleccionan en función de los requisitos de servicio. Para aplicaciones que implican cambios de temperatura y gradientes térmicos significativos, es fundamental investigar las propiedades mecánicas de los materiales a altas temperaturas para conocer a fondo los límites mecánicos. Los materiales, especialmente los polímeros, suelen ablandarse a altas temperaturas. Muchos fallos mecánicos se deben a la deformación por fluencia y a la fatiga térmica que sólo tienen lugar a temperaturas elevadas. Por lo tanto, se necesita una técnica fiable para medir la dureza al rayado a altas temperaturas con el fin de garantizar una selección adecuada de los materiales para aplicaciones a altas temperaturas.</p>
<p><a href="https://nanovea.com/wp-content/themes/wp-nanovea/Application%20Notes/high-temperature-tribology.pdf" target="_blank" rel="noopener noreferrer">Dureza al rayado a alta temperatura mediante tribómetro</a></p>
<p>&nbsp;</p><p>The post <a href="https://nanovea.com/es/dureza-de-los-aranazos-a-alta-temperatura-utilizando-el-tribometro/">High Temperature Scratch Hardness Using Tribometer</a> appeared first on <a href="https://nanovea.com/es">NANOVEA: Advanced Profilometers, Tribometers, Nanoindenters, and Scratch Testers for Materials Testing</a>.</p>
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