Effect of Cu Content on the Tribological Performance of Cr-N Coatings at High Temperatures (840°C)
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Cr-N and Cu-Cr-N coatings with Cu content between 3-65 at.%, Cu/Cr ratios in the 0.04-4.5 range and 21-27 at.% N, synthesized by twin e-beam Physical Vapor Deposition (EBPVD) at 450°C, were investigated. Using X-ray photoelectron spectroscopy (XPS), glancing angle X-ray diffraction (GAXRD) and scanning electron microscopy (SEM), in combination with nanoindentation mechanical property measurements and laboratory controlled ball-on-disc sliding experiments, it is shown that Cu-Cr-N coatings with low Cu content (3 at.%) possess sufficient wear resistance for high temperature demanding tribological applications. Copyright © 2009 by ASME.
author list (cited authors)
Polychronopoulou, K., Rebholz, C., Demas, N. G., Polycarpou, A. A., & Gibson, P. N.