Cu/Ti3SiC2 composite: a new electrofriction material

摘要

Cu/Ti3SiC2, composite, a new electrofriction material, was prepared, for the first time, by PM method. The microstructure, mechanical and electrical properties of the Cu/Ti3SiC2 composites were investigated and were compared with those of Cu/graphite composites. The re- sults demonstrated that Cu/Ti3SiC2 composites had supe- rior mechanical properties over Cu/graphite composites. At filer content of less than 20 vol, the electrical con- ductivity for Cu/Ti3SiC2 composites was higher than that for Cu/graphite composites, at high filer content, the electrical conductivity for Cu/Ti3SiC2 composites was lower than that for Cu/graphite composites because of the presence of residual pores. It was found that like Cu/graphite composite, Cu/Ti3SiC2 was a selflubricated material. The compressive yield strength, Brinell hard- ness, relative ratio of compressive for Cu-30 vol Ti3sSiC2 composites are 307 MPa, 140, 15.7qc respective- ly.