(1. 中南大学 粉末冶金国家重点实验室，长沙 410083
2. 中南林业科技大学 材料科学与工程学院，长沙 410004)
摘 要: 采用模压法制备了一种新型的炭纤维混杂铜网增强树脂基复合材料(Cf/PF-Cu复合材料)，并在销盘式载流摩擦磨损试验机上进行了试验。在电流分别为0 A和50 A条件下，研究压力(p)-速度(v)因素(简称pv因素，数值分别为5、10、15、20、25、30和35 MPa？m/s)对Cf/PF-Cu复合材料载流摩擦磨损性能的影响。结果表明：在非载流条件下，摩擦因数随pv值的增加呈逐渐下降趋势，质量磨损率则呈缓慢增加趋势，变化均非常小。在载流条件下，摩擦因数随pv值的增加变化不大，而质量磨损率则变化剧烈；当pv值在15~35 MPa？m/s范围时，质量磨损率随pv值的增加而急剧增加。在载流摩擦磨损过程中，随着pv值的增加，摩擦磨损机制逐渐由磨粒磨损转变为黏着磨损，在pv值达到35 MPa？m/s时则表现为显著的氧化磨损和熔融喷溅。
关键字: Cf/PF-Cu 复合材料；摩擦；磨损；磨损机制
（1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. School of Materials Science and Engineering, Central South University of Forestry and Technology, Changsha 410004, China）
Abstract:Carbon fibre (Cf) and copper fibre (Cu) fabric-reinforced phenol formaldehyde (PF) matrix composites (Cf/PF-Cu) were prepared by hot-pressing method, and then current-carrying friction and wear testing was carried on. The effect of pressure (p)-velocity (v) factor (pv factor for short) on the tribological behavior was investigated. Friction and wear tests were conducted on a pin-on-disc type wear tester. The tests were performed at two electrical currents (0 A and 50 A) and seven different combinations of contact pressure and sliding velocity (5, 10, 15, 20, 25, 30 and 35 MPa？m/s). The results indicate that the friction coefficient decreases with an increase in the pv value, and the wear rate slightly increases with an increase in the pv value when the current is 0 A. When the electrical current is 50 A, the friction coefficient increases little with the increase of the pv value, but the mass wear rate increases drastically. As the pv value increases, the wear behavior gradually changes from abrasive wear to adhesive wear. When the pv value reaches 35 MPa？m/s, the wear behavior performs as oxidative wear and melt ejection of copper alloy.
Key words: Cf/PF-Cu composites; wear; friction; wear mechanism
