Tribology Effect of Copper Based Composites for High-Speed Train Braking Application

Abstract

This paper disclosed the effect of third body on tribological performance of friction pair of copper-matrix materials and H13 steel using a fixed speed test from 3.14 m/s to 31.4 m/s at 0.5MPa. Results showed that the third body increase improved and stabilized friction coefficient. When the third body decreased, the friction coefficient decreased accordingly, especially at lower speed. This was because the particle third body of low-speed was weakly bound to the matrix, so the number of particles was easy to decrease.