Abstract:
Ag-MoS
2-graphite and Ag-MoS
2-graphite-Ti
3SiC
2 composites were prepared by hot-pressing method. The relative density, hardness, bending strength and the properties of friction and wear of the composites in both air and vacuum environment were investigated. It is found that the density and bending strength of the composite decreased after the introduction of Ti
3SiC
2 particulates because of the occurrence of pores at the interface between Ti
3SiC
2 and matrix. However, the addition of Ti
3SiC
2 had a negligible effect on the hardness of the composite. The friction coefficient of Ag-MoS
2-graphite-Ti
3SiC
2 was higher than Ag-MoS
2-graphite without respect of environment. This can be attributed to the three body abrasive effect of detached Ti
3SiC
2 particles which hampered the formation of solid lubricating layer. However, the wear resistant of the composite in air was improved obviously after incorporation of Ti
3SiC
2 particles due to the generation of oxides of copper.