Abstract
Hard and wear resistant coatings are useful to enhance the functional properties and improve the lifetime of mechanical components. This study proposes a relationship between microstructure and tribo-mechanical properties of TiC, CrC, ZrC and WC transition metal carbide coatings. In these coatings, an amorphous carbon (a-C) matrix phase coexists with a crystalline TMC phase. Superior wear resistance of ZrC coatings followed by the TiC coating was observed and this was explained by improved crystallinity and a-C phase present in coatings. Wear mechanisms were proposed by chemical analysis of wear tracks using micro Raman spectroscopy and energy dispersive X-ray spectroscopy.
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