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Development of a friction energy capacity approach to predict the surface coating endurance under complex oscillating sliding conditions

Liskiewicz, T. and Fouvry, S. (2005) Development of a friction energy capacity approach to predict the surface coating endurance under complex oscillating sliding conditions. Tribology International, 38 (1). pp. 69-79. ISSN 0301-679X

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In the case of surface coatings application it is crucial to establish when the substrate is reached to prevent catastrophic consequences. In this study, a model based on local dissipated energy is developed and related to the friction process. Indeed, the friction dissipated energy is a unique parameter that takes into account the major loading variables which are the pressure, sliding distance and the friction coefficient. To illustrate the approach a sphere/plane (Alumina/TiC) contact is studied under gross slip fretting regime. Considering the contact area extension, the wear depth evolution can be predicted from the cumulated dissipated energy density. Nevertheless, some difference is observed between the predicted and detected surface coating endurance. This has been explained by a coating spalling phenomenon observed below a critical residual coating thickness. Introducing an effective wear coating parameter, the coating endurance is better quantified and finally an effective energy density threshold, associated to a friction energy capacity approach, is introduced to rationalize the coating endurance prediction. The surface treatment lifetime is then simply deduced from an energy ratio between this specific energy capacity and a mean energy density dissipated per fretting cycle. The stability of this approach has been validated under constant and variable sliding conditions and illustrated through an Energy Density–Coating Endurance chart

Item Type: Article
Copyright, Publisher and Additional Information: Copyright © 2005 Elsevier B.V. This is an author produced version of the published paper. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: coating endurance; TiC; energy wear approach; fretting wear; variable sliding conditions.
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Engineering (Leeds) > School of Mechanical Engineering (Leeds) > Institute of Engineering Thermofluids, Surfaces & Interfaces (iETSI) (Leeds)
Depositing User: Mrs Fiona Slade
Date Deposited: 24 Nov 2008 17:54
Last Modified: 08 Feb 2013 17:05
Published Version: http://dx.doi.org/10.1016/j.triboint.2004.06.002
Status: Published
Publisher: Elsevier
Refereed: Yes
Identification Number: 10.1016/j.triboint.2004.06.002
URI: http://eprints.whiterose.ac.uk/id/eprint/4941

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