Contact

Corrosion Effect On Hardness Using Nanoindentation

The mechanical properties of materials deteriorate during the corrosion process. For example, lepidocrocite (γ-FeOOH) and goethite (α-FeOOH) form in the atmospheric corrosion of carbon steel. Their loose and porous nature results in absorption of moisture and in turn further acceleration of the corrosion process ii . Akaganeite (β-FeOOH), another form of iron
oxyhydroxide, is generated on the steel surface in chloride containing environmentsiii . Nanoindentation can control the indentation depth in the range of nanometers and microns, making it possible to quantitatively measure the hardness and Young’s modulus of the corrosion products formed on the metal surface. It provides physicochemical insight in corrosion mechanisms involved so as to select the best candidate material for the target applications.

Corrosion Effect On Hardness Using Nanoindentation

Drywall Texture & Pitting Using 3D Profilometry

Drywall texture and roughness is critical in the final products quality and appearance. A better understanding of the effect of surface texture and consistency on the moisture resistance of the coated drywall allows selecting the finest product and optimizing the painting technique to obtain the best result. Quantifiable, fast and reliable surface inspection of the coating surface is in need for quantitative evaluation of the surface quality. The Nanovea 3D Non-Contact Profilometers utilizes chromatic confocal technology with unique capability to precisely measure the sample surface. The line-sensor technique can finish scanning a large drywall surface in minutes.

Drywall Texture & Pitting Using 3D Profilometry

5 AXIS Chromatic Confocal Measurement

Nanovea has delivered on the request for a 5 axis measurement system combined with a chromatic confocal line sensor for fast QC of specialized parts. Watch short Video. To learn more about Nanovea’s Profilometers Learn More

Machining Finish Quality Using 3D Profilometry

Machining finish is a result of different cutting techniques exhibiting different surface features. Flatness, roughness and texture of a cut/machined surface is vital to its end use. Accurate clean cut reduces the further work on grinding and rough edge removal. For example, when marble tiles are manufactured, inaccurate and rough cutting may lead to mismatch during the tile floor installation.  Quantitative measurement of the surface texture, consistency, roughness and others is critical in improving the cutting/machining processing and quality control measures.

Machining Finish Quality Using 3D Profilometry

Grooved Stent Coating Failure Using Nano Scratch Testing

Drug–eluting stent is a novel approach in stent technology. It possesses a biodegradable and biocompatible polymer coating that releases medicine slowly and continuously at the local artery to inhibit intimal thickening and prevent the artery from being blocked again. One of the major concerns is the delamination of the polymer coating that carries the drug-eluting layer from the metal stent substrate. In order to improve the adhesion of this coating to the substrate, the stent is designed in different shapes. Specifically in this study, the polymer coating locates at the bottom of the groove on the mesh wire, which brings enormous challenge to the adhesion measurement. A reliable technique is in need to quantitatively measure the interfacial strength between the polymer coating and the metal substrate. The special shape and the small diameter of the stent mesh (comparable to a human hair) require ultrafine X-Y lateral accuracy to locate the test position and proper control and measurement of the load and depth during the test.

Grooved Stent Coating Failure Using Nano Scratch Testing

In-line Inspection Game Changer

Using in-line inspection (POINT or LINE SENSORS) Nanovea’s unique in-line software package can measure and analyze “live” roughness and texture parameters meeting standards for up to 8 points sensors or up to 4 line sensors. The software has many features including pass and fail criteria specific to each sensor or average of all sensors. Acquisition rates of more than 1,300,000 points per seconds. This is ideal for any film/paper sheet measurements and other in-line applications. Nanovea provides integration support including specific mounting structure.

Coating Inspection of TIN by Scratch Testing

Coating inspection of residual stress in protective PVD/CVD coatings plays a critical role in the performance and mechanical integrity of the coated component. The residual stress derives from several major sources, including growth stress, thermal gradients, geometric constraints and service stresses. The thermal expansion mismatch between the coating and the substrate created during coating deposition at elevated temperatures leads to high thermal residual stress. Moreover, the TiN coated tools are often used under very high concentrated stresses, e.g. drill bits and bearings. It is critical to develop a reliable quality control process to quantitatively inspect the cohesive and adhesive strength of the protective functional coatings.

Coating Inspection of TIN by Scratch Testing

Tribology Inspection of Titanium Nitride Coatings By Tribometer

Wear of the tools in service creates loss of dimensions and functionality of the tools. It has significant influence on the tool life, as well as the surface integrity and dimension accuracy of the finished products. The tribo-mechanical properties of the protective ceramic coatings can substantially enhance the service performance and lifespan of the machine tools. Reliable and accurate tribology inspection of such protective coatings becomes vital to ensure quality performance of the tools.

Inspection of Titanium Nitride Coatings By Tribometer

Roughness Mapping Inspection Using 3D Profilometry

Surface defects of products derive from materials processing and product manufacturing. In-line surface quality inspection ensures the tightest quality control of the end products. The Nanovea 3D Non-Contact Profilometers utilize chromatic confocal technology with unique capability to determine roughness mapping of a sample without contact. The line sensor enables scanning the 3D profile of a large surface at a high speed. The roughness threshold calculated real-time by the analysis software serves as a fast and reliable pass/fail tool.

Roughness Mapping Inspection Using 3D Profilometry

Visit Nanovea at SciTech Forum

The AIAA Science and Technology Forum and Exposition (AIAA SciTech Forum) has continued to grow in each succeeding year, drawing participants from around the globe. Plenary and Forum 360 participants tackled the most pressing issues impacting the future of aerospace, while the technical program presented innovative research and technologies that offer solutions. Learn More

App Notes
Brochure