The CrN‐Ag coating system is a promising candidate for high‐temperature lubrication, as it combines the wear and corrosion resistance of CrN with the lubrication properties of Ag. In this study, special emphasis is laid on the influence of surface reactions, like the formation of Ag agglomerates and/or surface oxidation, and on the high‐temperature tribological behavior at 600 °C. Characterization of the friction curves and the wear tracks provides an understanding of the relation between the out‐diffusion of Ag (forming agglomerates) and its lubricating effect.
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Kutschej et al. (2006) studied this question.
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