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Effect of Cu Content on the Tribological Performance of Cr-N Coatings at High Temperatures (840°C)

[+] Author Affiliations
Kyriaki Polychronopoulou, Claus Rebholz

University of Cyprus, Nicosia, Cyprus

Nicholaos G. Demas, Andreas A. Polycarpou

University of Illinois at Urbana-Champaign, Urbana, IL

P. N. Gibson

Joint Research Centre of the European Commission, Ispra (VA), Italy

Paper No. IJTC2009-15189, pp. 115-117; 3 pages
doi:10.1115/IJTC2009-15189
From:
  • ASME/STLE 2009 International Joint Tribology Conference
  • ASME/STLE 2009 International Joint Tribology Conference
  • Memphis, Tennessee, USA, October 19–21, 2009
  • Conference Sponsors: Tribology Division
  • ISBN: 978-0-7918-4895-1 | eISBN: 978-0-7918-3862-4
  • Copyright © 2009 by ASME

abstract

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

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