nanoscratching Archives - https://nanovea.com/tag/nanoscratching/ Metrology Instruments for Materials Research and Quality Control Tue, 22 Jun 2021 21:37:52 +0000 en-US hourly 1 https://wordpress.org/?v=6.8.5 https://nanovea.com/wp-content/uploads/2025/02/nanovea-favicon.png nanoscratching Archives - https://nanovea.com/tag/nanoscratching/ 32 32 ASTM D7187 Temperature Effect Using Nanoscratching https://nanovea.com/astm-d7187-nanoscratching/?utm_source=rss&utm_medium=rss&utm_campaign=astm-d7187-nanoscratching https://nanovea.com/astm-d7187-nanoscratching/#respond Thu, 29 Jun 2017 16:04:10 +0000 http://nanovea.com/?p=2877 ASTM D7187, the resistance of the paint to scratch and mar plays a vital role in its end use. Automotive paint susceptible to scratches makes it difficult and costly to maintain and repair. Different coating architectures of the primer, basecoat, and clearcoat have been developed to achieve the best scratch/mar resistance. Nanoscratch testing has been […]

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]]> ASTM D7187, the resistance of the paint to scratch and mar plays a vital role in its end use. Automotive paint susceptible to scratches makes it difficult and costly to maintain and repair. Different coating architectures of the primer, basecoat, and clearcoat have been developed to achieve the best scratch/mar resistance. Nanoscratch testing has been developed as a standard test method to measure the mechanistic aspects of scratch/mar behavior of paint coatings as described in ASTM D7187. Different elementary deformation mechanisms, namely elastic deformation, plastic deformation and fracture, occur at different loads during the scratch test. It provides a quantitative assessment of the plastic resistance and fracture resistance of the paint coatings.

ASTM D7187 Temperature Effect Using Nanoscratching

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