Relation of Current-Carrying Quality with Wear Performance of Stainless Steel/Impregnated Metallized Carbon Friction Pairs at Different Spring Stiffnesses

Wear performance and current-carrying quality of the stainless steel/impregnated metallized carbon friction pairs were studied on a pin-on-disc friction and wear tester at different spring stiffnesses. The results indicate that the current-carrying quality in the friction pair circuit increased gradually first and then decreased with the increase of the spring stiffness, and the rigid current-carrying quality was the weakest. The wear performance of the pin sample with impregnated metallized carbon was closely related to the current-carrying quality. The poorer the current-carrying quality, the larger the wear rate of pin samples. The current-carrying quality was the best at the stiffness of 19 N·mm-1, while wear rate of the pin sample was the lowest.