Host: The Ceramic Society of Japan
Frictional properties were measured for carbon nano-fibre reinforced plastics (CNFRP) and C/C composites derived from it. Stronger friction compared to matrix was obtained by addition of 4-12wt% carbon nano-fibre(CNF). Slight anisotropy was observed depending on the blading direction. Friction was decreased and the anisotropy was lost by the addition of 15% CNF. AFM observation revealed that the anisotropy is based on the ordering of polymer chain directions, not on CNF orientations. Frictional coefficients of C/C composites derived from CNFRP was smallest for the sample heat-treated at 2000 degrees C, which gave the flattest surface.