2002•Journal of Central South University of Technology(Natural Science)Requires access
Wear properties and friction surfaces of the C/C composites
Jiang Li
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Abstract
A series of brake experiments at different brake velocities have been made for carbon carbon composite which was densificated by resin impregnation after pre densificating to initial density by CVD(chemical vapor deposition).SEM graphs of the friction surface and the wear debris and the analysis of micro Ramam spectra of the friction surface are given. The results show that, the friction coefficient braking at the speed of 10 m/s is the highest and that at 25 m/s is the second highest and the wear rate increases with the braking velocity. The friction and wear properties are connected closely with the surface morphology and the structure of the friction surface and the wear debris. The graphitization degree of the friction surface is increased at a high braking velocity.