Effect of load and velocity on wear behaviour of Cu based self-lubricating composite

Abstract

The wear test of copper (Cu)–niobium diselenide (NbSe2)–silicon carbide (SiC) composite were conducted on a pin on disc under different normal loads and sliding speed. The morphologies of the worn surface of the composite were observed by using scanning electron microscopy. Experiment results show that the friction coefficient and wear rate of (NbSe2+SiC)/Cu composite increased with increasing of the normal load and the sliding speed. The addition of NbSe2 can effectively reduce the plastic deformation of the substrate, making the friction and wear properties of composite has greatly improved. Mild adhesive wear and abrasive wear were the main wear mechanisms during the sliding process.