The first and most enduring application of nanoindentation is the characterization of hard coatings designed for mechanical and chemical protection of an underlying material. Quantitative scratch testing with a nanoindenter provides a convenient way to characterize the adhesion of such coatings. This session is a live demonstration. Mrs. Hay demonstrates all aspects of scratch testing a TiAlN coating, including sample preparation, instrument configuration, test specification, and interpretation of results. Critical load under two different test conditions (scratch velocity) are compared for significant difference using the student-t test.

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