Process for evaluation of delamination-resistance of hard coatings on metal substrates

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United States of America Patent

PATENT NO 9869623
SERIAL NO

14678881

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Abstract

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This disclosure relates to rapid and repeatable tests that can be used to evaluate the interfacial adhesion of coatings to substrates. In particular embodiments, tests are used to assess the resistance of anodic oxides to delamination from aluminum substrates. The tests can be conducted using standard hardness test equipment such as a Vickers indenter, and yield more controlled, repeatable results than a large sample of life-cycle tests such as rock tumble tests. In particular embodiments, the tests involve forming an array of multiple indentations within the substrate such that stressed regions where the coating will likely delaminate are formed and evaluated.

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Patent Owner(s)

Patent OwnerAddress
APPLE INCONE APPLE PARK WAY CUPERTINO CA 95014

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Counts, William A Sunnyvale, US 29 178
Curran, James A Morgan Hill, US 58 350
Hamann, Eric W Santa Clara, US 12 35

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