Abstract
Abstract Thermochemical analysis was used to describe chemical reactions that take place during the wear in air of several low wear surface treatments. The reactions effect oxidation of surfaces and transfer layers, adhesion of transfer layers, and debris formation. Surface treatments studied include MoS 2 films, TiN and TiC coatings, and steel implanted with Ti + and (Ti + + C + ). Surface chemical and structural techniques were used to analyze the interfacial films and wear debris produced during dry sliding wear tests at or near room temperature. Ternary and quaternary phase diagrams calculated (for the most part) from thermochemical data are shown to be in agreement with compositions and phases determined experimentally. Speculations are given on why thermochemistry applies to wear behavior and how this modeling approach may be used to design beneficial surface treatments.
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