Abstract

Abstract The friction behaviour of several C-SiC composites under different experimental conditions (velocity, load) is discussed in this paper. Unidirectional continuous PAN-based fibres (M40)-reinforced (SiC) ceramic matrix composites are tested in sliding contact using a disc-on-disc tribometer. During a test, tribological behaviour can lead to a suddenly increase of friction coefficient value and contact temperature. This increase appears after a time-lapse which depends on velocity and nonnal load. Particular attention is paid to the modification of the third body during the transition between low and high friction. The reinforcement of SiC monolithic ceramics by carbon fibres improved mechanical and tribological performances.

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