FRICTION AND WEAR PROPERTIES OF C C AND C ERAMICS PARTICLE DISPERSED C/C COMPOSITES IN A ZINC PLATING BATH/

Friction and wear properties of C/C and ceramic particle dispersed C/C composites sliding against sialon ceramics were investigated in a zin c plating bath. (T)he results are summarized as follows: (1) SIC parti cle dispersed C/C has the highest friction coefficient and the lowest wear resistance. BN particle dispersed C/C has lower friction coeffici ent but lower wear resistance than C/C composite. Y2O3 particle disper sed C/C has the lowest friction coefficient and the highest wear resis tance. (2) Dispersion of some ceramic particles into C/C composite was useful in improving its friction and wear properties, although some d ispersions had the oppsite effect. (3) Dispersion of ceramic particles with higher hardness than dress but lower hardness than sialon cerami cs into C/C composite was found to improve both the fricition and wear properties of the composite.