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High temperature tribological behaviour of metal matrix composites produced by SPS

Orozco Gomez, Solisabel and Delbé, Karl and Benitez, Alberto and Paris, Jean-Yves and Denape, Jean High temperature tribological behaviour of metal matrix composites produced by SPS. (2011) Key Engineering Materials, 482. 89-100. ISSN 1662-9795

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Official URL: http://dx.doi.org/10.4028/www.scientific.net/KEM.482.89

Abstract

Materials used as friction components in transportation field are subjected to extreme working conditions: they rapidly reach their structural limits and critical parts require to be regularly replaced. Alternative solutions withstanding higher operating conditions imply to find innovative materials. Steel matrix composites including various solid lubricants, WS2 and h-BN, able to support high temperatures were developed using a Spark Plasma Sintering technique, which makes possible the formation of new microstructures out of reach by conventional means. Sliding tests were conducted using a pin-on-disc tribometer in air at 450°C, with a normal load of 15 N and various velocities ranged from 0.1 to 1.5 m/s. Influence of solid lubricant content and sensitivity to test parameters were studied in terms of friction and wear responses of the contacting materials. Test results reveal an improvement of friction properties for composites containing highest WS2contents. A reduction of wear is quantified for all composites, and the best behaviour is observed for those that contain WS2. In agreement with the third body approach, interpretations are proposed to describe the interphase dynamics within the contact.

Item Type:Article
Additional Information:Thanks to Trans Tech Publications editor. The definitive version is available at : http://dx.doi.org/10.4028/www.scientific.net/KEM.482.89
HAL Id:hal-00881328
Audience (journal):International peer-reviewed journal
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Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
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Deposited On:18 Oct 2013 08:39

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