Fouvry, S., Liskiewicz, T., Kaspa, P.H. and Hannel, S. (2003) An energy description of wear mechanisms and its applications to oscillating sliding contacts. Wear, 255 (1-6). pp. 287-298. ISSN 0043-1648Full text available as:
Available under License : See the attached licence file.
To quantify wear rates, the Archard approach is classically applied. It relates the wear volume to the product of the sliding distance and the normal load. A wear coefficient is then extrapolated and is supposed to establish the wear resistance of the studied material. This synthesis shows that this approach does not work when the friction coefficient is not constant. It appears to be much more relevant to consider the interfacial shear work as a significant wear parameter. This approach is applied to study the wear response of different steels and then extended to different hard TiN, TiC coatings under reciprocating sliding conditions. By identifying wear energy coefficients the wear quantification can be rationalized and the wear resistance of the studied tribosystems can be classified. This also appears to be a convenient approach to interpret the different wear mechanisms. Metallic materials involving plastic strain are analyzed from FEM computations. The energy balance confirms that a minor part of the dissipated energy is consumed by plasticity, whereas the major part participates in the heat and debris flow through the interface. When a load energy approach is introduced an accumulated density of the dissipated energy variable is considered to quantify the TTS (Tribologically Transformed Structure) formation. A wear ”scenario” of metallic structures is then discussed. This energy wear approach is applied to analyze hard coating wear mechanisms focusing on abrasion and oxidation phenomena. The local wear energy analysis is transposed, thus allowing the lifetime of hard coatings to be quantified.
|Copyright, Publisher and Additional Information:||Copyright © 2003 Elsevier Science B.V. This is an author produced version of a paper published in Wear. Uploaded in accordance with the publisher's self-archiving policy.|
|Keywords:||Fretting, wear, SC653, TiN, TiC, coating, lifetime, energy approach|
|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:||02 Dec 2008 14:54|
|Last Modified:||08 Feb 2013 17:05|
Actions (login required)