Tribology Letters

, Volume 34, Issue 2, pp 113–124

Effect of Tribofilm Formation on the Dry Sliding Friction and Wear Properties of Magnetron Sputtered TiAlCrYN Coatings

Original Paper

DOI: 10.1007/s11249-009-9415-9

Cite this article as:
Luo, Q., Zhou, Z., Rainforth, W.M. et al. Tribol Lett (2009) 34: 113. doi:10.1007/s11249-009-9415-9

Abstract

Nano-structured TiAlCrYN coatings, grown by unbalanced magnetron sputtering on various steel substrates, exhibited friction coefficients 0.6–0.8 and wear coefficients 10−16–10−15 m3 N−1 m−1 in dry sliding wear tests. This article reports comprehensive worn surface analyses using SEM, TEM, EDX, EELS and Raman spectroscopy. A ~80 nm thick tribofilm formed on the TiAlCrYN worn surface was found to have dense amorphous structure and homogeneous oxide composition of Cr0.39Al0.19Ti0.20Y0.01O0.21. Viscous flow of the amorphous tribofilm was dominant in causing the high friction coefficient observed. The coatings showed combined wear mechanisms of tribo-oxidation and nano-scale delamination.

Keywords

Hard coatings Friction Wear PVD Tribofilms TEM 

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Materials and Engineering Research InstituteSheffield Hallam UniversitySheffieldUK
  2. 2.Department of Engineering MaterialsUniversity of SheffieldSheffieldUK
  3. 3.ELTRO(GB) LimitedFarnborough, HampshireUK

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