Comparison of arc evaporated Mo-based coatings versus Cr1N1 and ta-C coatings by reciprocating wear test

Cathodic arc evaporation was utilized to synthesize Cr-N, ta-C, Al-Mo-N, Mo-N, Mo-O-N and Mo-Cu-N coatings. The coatings were characterized with respect to their stoichiometry, morphology and mechanical properties. A reciprocating wear test was used to compare the wear behavior for the unpolished coatings under dry conditions and polished coatings under lubricated (Mo-DTC) conditions. The test allows a classification of the coatings with respect to material transfer similar to scuffing or fretting and with respect to wear of the counter-part and may be utilized for a pre-selection of coatings for engine tests. (c) 2012 Elsevier B.V. All rights reserved.