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Effect of Braking Speed on Friction and Wear Behaviors of C/C-SiC Composites

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Carbon fiber-reinforced silicon carbide matrix composites (C/C-SiC) have received considerable attentions because of their superior friction and wear behaviors. In this paper, C/C-SiC composites were fabricated by the reaction melt infiltration method, and the braking performance, the microstructure of friction surface, and wear debris at different braking speeds were also investigated. The mean coefficient of friction increases to the maximum value of 0.52 at 10 m/s and then declines afterwards with an increase in the braking speed. The higher coefficient of friction at low braking speed indicates the excellent braking performance of the C/C-SiC composites for low braking energy. Excellent wear resistance is demonstrated by the low wear rate of the C/C-SiC composites in comparison with C/C composites.

Document Type: Research Article


Affiliations: National Key Laboratory of Thermostructural Composite Materials, Northwestern Polytechnical University, Xi'an 710072, China

Publication date: October 1, 2007


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