Tribological stability of particle reinforced aluminum matrix composites in braking

来源期刊：中国有色金属学报(英文版)2000年第4期

论文作者：吴军华 张国定 王文龙

文章页码：498 - 501

Key words：aluminum matrix composites; friction coefficient; stability; mass transfer layers

Abstract: The tribological stability of particle reinforced aluminum matrix composites in braking was studied. Considering the requirements of the intention of present transportation field, high braking pressure and high initial braking rotating speed, as well as different reinforcement volume fractions were selected. The results indicate that under a systematic comparison with traditional braking material of cast iron, SiC particulate reinforced aluminum material composites (PRAMC) can retain stable friction coefficient in various braking pressures and rotating speeds. Even in a concrete course of braking, PRAMC can also maintain friction coefficient with little fluctuation. The existence of a uniform mass transfer layer adhering to the contact surface is an important prerequisite for maintaining a stable friction coefficient.