Tribological propertie's of unbalanced magnetron sputtered nano-scale multilayer coatings TiAlN/VN and TiAlCrYN deposited on plasma nitrided steels

LUO, Q., HOVSEPIAN, P. E., LEWIS, D. B., MUNZ, W. D., KOK, Y. N., COCKREM, J., BOLTON, M. and FARINOTTI, A. (2005). Tribological propertie's of unbalanced magnetron sputtered nano-scale multilayer coatings TiAlN/VN and TiAlCrYN deposited on plasma nitrided steels. Surface and coatings technology, 193 (1-3), 39-45.

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Abstract

Unbalanced magnetron sputtered multilayer coatings TiAlN/VN and TiAlCrYN grown on pulse plasma nitriding pre-treated low alloy steel P20 have been characterised by using X-ray diffraction (XRD), scanning electron microscope (SEM), micro-indentation, scratch and pin-on-dise wear tests. A 160-mu m-thick nitrided case was formed on the steel surface containing a pure Fe3N and Fe4N compound layer and showing hardness up to 8.5 GPa, which led to improved load bearing ability and adhesion behaviour of the coating-substrate system. The coatings deposited on non-nitrided P20 showed poor adhesion and severe cracking and spalling wear. In contrast, the TiAlN/VN and TiAlCrYN deposited on nitrided substrates showed only mild polishing and oxidation wear mechanisms and extremely low wear coefficients in the scales of 10(-17) and 10(-16) m(3) N-1 m(-1), respectively. In drilling solution treated 304 austenite stainless steel, the TiAlN/VN-coated drills showed a lifetime 50% longer than TiAlN-coated drills. Plasma nitriding pre-treatment led to further increases of lifetime by 33%. (c) 2004 Elsevier B.V. All rights reserved.

Item Type:	Article
Additional Information:	4th Asian-European International Conference on Plasma Surface Engineering, SEP 28-OCT 03, 2003 Jeju City, SOUTH KOREA
Research Institute, Centre or Group:	Materials and Engineering Research Institute > Thin Films Research Centre > Nanotechnology Centre for PVD Research Materials and Engineering Research Institute > Materials Analysis and Research Services
Identification Number:	10.1016/j.surfcoat.2004.07.058
Depositing User:	Ann Betterton
Date Deposited:	17 Feb 2010 16:15
Last Modified:	10 Sep 2010 16:07
URI:	http://shura.shu.ac.uk/id/eprint/1133

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