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Tribological duality of Ti3SiC2
Journal article   Peer reviewed

Tribological duality of Ti3SiC2

Alexandra Souchet, Julien Fontaine, Michel Belin, Thierry Le Mogne, Jean-Luc Loubet and Michel Barsoum
Tribology letters, v 18(3), pp 341-352
01 Mar 2005

Abstract

Abrasion Coefficient of friction Debris Friction Grain size Silicon nitride Titanium silicon carbide Tribology Wear particles
We report here on the friction behavior of fine- and coarse-grained Ti3SiC2 against steel and Si3N4 balls. Two successive friction regimes have been identified for both grain sizes and both counterparts. First, Type I regime is characterized by a relatively low (0.1–0.15) friction coefficient, and very little wear. Sliding occurs between a tribofilm on the ball and the Ti3SiC2 plane when against steel. Then, a Type II regime often follows, with increased friction coefficients (0.4–0.5) and significant wear. Compacted wear debris seems to act as a third body resulting in abrasion of the ball, even in the case of Si3N4. The transition between the two regimes occurs at different times, depending on various factors such as grain size, type of pin, and normal load applied. Some experiments under vacuum showed that the atmosphere plays also a major role. The reason for this evolution is not fully clear at that time, but its understanding is of major technological importance given the unusual good properties of this material.

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Domestic collaboration
International collaboration
Web of Science research areas
Engineering, Chemical
Engineering, Mechanical
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