Friction and Wear Behaviors of Ceramics-Cemeneted Carbide Couples. (Part II)

Abstract

The friction and wear behaviors of ceramics and cemented carbide are greatly influenced by the presence of adhesive or oxide films which are formed during sliding. Increase in sliding velocity causes an increase in temperature, and increase in load has a tendency to remove surface lubricating films (adhesive films). For example, at the load of 4kg, the adhesive films are suddenly broken, the surface damage and fragmentation are observed. It is evident that brittle materials become much more ductile during sliding. The sliding process also destroys the original crystal structure at the surface, and the generated adhesive films are driven into the bulk of the material.