Effect of Friction Pressure and Wet-dry Condition on Friction Property of Cu-Al-based Friction Material

Cu-Al-based friction material was prepared by powder metallurgy.The change of friction properties under different friction pressure was tested through fixed-speed friction tester,and the similarities and differences between wet and dry friction mode were compared.The results show: when the friction speed is lower than 1500 r/min,friction coefficient is little change with the increase of friction pressure,wear rate is also increases.While friction speed is higher than it,friction coefficient increases with the increase of friction pressure.The speed is lower than 1000 r/min,friction coefficient of wet friction is higher than dry mode,with the increase of speed,friction coefficient between them is similar,and wear rate of wet friction is larger than dry.