Tribological behavior of CrN and Al-Cr-N coatings
AuthorDemas, N. G.
Polycarpou, A. A.
PublisherAffiliation: Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
Affiliation: Department of Mechanical and Manufacturing Engineering, University of Cyprus, 1678, Nicosia, Cyprus
Correspondence Address: Demas, N. G.
Department of Mechanical Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
Source2008 Proceedings of the STLE/ASME International Joint Tribology Conference, IJTC 2008
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The tribological behavior of CrN and Al-Cr-N coatings prepared by twin electron-beam evaporation at 450°C was investigated. The composition, structure, mechanical and tribological properties of the coatings were determined using X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD) in combination with nanoindentation mechanical property measurements, scanning electron microscopy (SEM), and laboratory controlled ball-on-disc sliding experiments. It was found that all of the Al-Cr-N coatings exhibit higher hardness compared to CrN coatings. Also, the compositions of Al-Cr-N coatings with the lower Al content and lower Al/Cr ratios showed better tribological performance than the rest of the coatings. Copyright © 2008 by ASME.
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