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The selection and use of wear tests for coatings are discussed. Coated materials are vastly different and more complicated than uncoated or monolithic materials. It is therefore necessary to characterize the coating and the coating/substrate interface in terms of physicochemical and mechanical properties. Wear is a multi-faceted phenomena. Various tests used to study the wear properties of coatings are described. They include tests for adhesive wear, abrasive wear, impact erosion wear, and fatigue wear.
abrasive wear, adhesive wear, coating, fatigue wear, impact erosive wear, rolling contact fatigue, substrate, test methods, tribotester, wear tests
Professor of Engineering, University of California, Los Angeles, Calif.