Tribological Behaviors of MoS₂/SiCH Film Composite Lubrication System

The tribological properties of MoS₂/SiCH composite system were investigated in vacuum environment, and the friction/wear mechanisms were also discussed. The results show that the MoS₂/SiCH composite system exhibited better tribological performances because the characteristic columnar microstructure of sputtered MoS₂ film could adsorb SiCH oil under the composite lubrication condition. The MoS₂/SiCH composite system exhibited a good synergistic effect as only the disk was coated with the MoS₂ film. In this case, the wear life was 1.86×10⁶ cycles, which was ~1.2 and 4.0 times longer than those at separate SiCH oil and MoS₂ film lubrication conditions.