Friction and wear in high speed sliding with and without electrical current

High speed sliding with electrical current has been studied frequently due to its many important industrial applications. In this paper, a friction test machine with the capacity up to 75 m/s sliding speed and 100 A current was constructed, and friction and wear performance of a carbon-graphite material under high speed sliding with and without current was studied. The effects of the load, sliding speed and electrical current on the tribological behavior of the tested material were investigated. The wear debris was examined by SEM. Test results showed different friction and wear performance of the test material with and without current.