Farley, Jonathan, Wrobel, L. C. (Luiz C.), 1952- and Mao, K.. (2010) Performance evaluation of multilayer thin film coatings under mixed rolling-sliding dry contact conditions. Wear, Vol.268 (No.1-2). pp. 269-276. ISSN 0043-1648

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Abstract

This paper focuses on the application of advanced finite element analysis to simulate the response of complex multilayer coatings when subjected to mixed rolling-sliding dry contact conditions, typical of those experienced by heavily loaded gear tooth flanks. In this study, a versatile model is developed to investigate the response of a variety of complex coatings. Through the investigation of three advanced surface coatings the developed model is shown to offer detailed subsurface stress and strain information, quantifying the benefits provided by the application of each coating. A number of rolling contact fatigue tests were also conducted to complement the computational simulations. An adapted twin disc testing machine was used to investigate the progressive wear rates of the three advanced surface coatings when subjected to mixed rolling-sliding contact at high load and in dry conditions. The result is a clear indication that advanced surface coating techniques can provide significant improvements in wear resistance and surface durability. From the rolling contact fatigue experiments conducted in this study, a multilayer tungsten carbide/carbon coating was shown to provide the most significant increase in surface durability with a 16-fold reduction in measured weight loss compared to the uncoated substrate over the 145,000 cycle test duration investigated. (C) 2009 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH):	Thin films, Multilayered -- Testing, Coatings -- Testing, Contact mechanics, Gearing, Finite element method, Tribology, Mechanical wear
Journal or Publication Title:	Wear
Publisher:	Elsevier BV
ISSN:	0043-1648
Date:	4 January 2010
Volume:	Vol.268
Number:	No.1-2
Number of Pages:	8
Page Range:	pp. 269-276
Identification Number:	10.1016/j.wear.2009.08.001
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Engineering and Physical Sciences Research Council (EPSRC)
URI:	http://wrap.warwick.ac.uk/id/eprint/16697

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