不同摩擦条件下铜-铁基粉末冶金材料的摩擦性能

Friction Property of Cu-Fe-based Powder Metallurgy Materials under Dry and Wet Friction Conditions

采用粉末冶金技术制备铜-铁基复合材料,在制动压力0.5～1.2MPa范围内,通过定速摩擦试验机研究干、湿条件下,速度、压力与材料摩擦磨损性能的关系。结果表明,干摩擦系数随摩擦速度增加而降低,湿摩擦明显降低了低速摩擦系数而对高速摩擦系数影响不大。低速摩擦系数随摩擦压力增加而增加,摩擦压力对高速摩擦系数影响不明显。

Copper-iron-based composites are prepared through powder metallurgic technique.The relationships between speed and pressure of friction and the friction and wear properties of the materials are studied on a pin-on-disk tester in the pressure range of 0.5～1.2MPa under dry and wet conditions.The results show that the dry friction coefficient is decreased with the increase of friction velocity,and the friction coefficient is significantly reduced for the wet friction with low speed,but it has little effect on that with high speed.The friction coefficient with low speed is increased with the increase of the pressure,but it is not obviously affected by pressure with high speed.