Effect of Tribofilm Formation on the Dry Sliding Friction and Wear Properties of Magnetron Sputtered TiAlCrYN Coatings |
| |
| Authors: | Q Luo Z Zhou W M Rainforth M Bolton |
| |
| Affiliation: | (1) Materials and Engineering Research Institute, Sheffield Hallam University, Sheffield, S1 1WB, UK;(2) Department of Engineering Materials, University of Sheffield, Sheffield, S1 3JD, UK;(3) ELTRO(GB) Limited, Unit B4 Armstong Mall, Farnborough, Hampshire, GU14 0NR, UK |
| |
| 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 |
| 本文献已被 SpringerLink 等数据库收录！ |
|
