Abstract: Sliding wear speciality of Ni-W-Co/SiC micro-partical composite plating in condition of lubricating oil pollutade is studied, the effect of load, sliding speed and the mass fraction of SiC micro-partieals on wear mechanism of the composite plating is also analyzied. The result shows that, in condition of lubricating oil gradually pollutade, wear mechanism of Ni-W-Co alloy mainly is micro-cutting and plouphing, SiC micro-particals fall off because of collided.

Key words: Boundary lubrication, Compound coating, Wearing principle