高速干摩擦条件下铝基复合材料的摩擦磨损行为研究  

Friction and Wear Behavior of the Materials under Very High Sliding Velocity

作　　者：张永振[1] 邱明[1] 上官宝[1] 铁喜顺[1] 马东辉[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《摩擦学学报》2005年第4期343-347,共5页Tribology

基　　金：国家自然科学基金资助项目(50375046);河南省杰出青年科学基金资助项目(0412002100).

摘　　要：在MMS-1G型高速干滑动摩擦磨损试验机上,采用铝基复合材料和蠕墨铸铁作为销试样,研究了速度和接触压力对摩擦副摩擦磨损特性的影响.结果表明:摩擦副的摩擦磨损特性受控于所产生的摩擦热、材料的导热能力以及材料保持一定塑性变形抗力的温度条件三者之间的耦合作用;随着速度与接触压力的增加,摩擦副的摩擦系数显著降低;不同材料表现出不同的磨损行为;接触压力愈高,材料的摩擦磨损性能差异愈小;在本文试验条件下,当摩擦速度较低(<100m/s)时,蠕墨铸铁表现出良好的摩擦磨损特性,而速度较高(>100m/s)时,铝基复合材料表现出较优良的摩擦磨损性能.Using a special high speed tribo-tester, tribological behaviors were investigated on aluminum composites reinforced by SiC particles and compacted graphite cast iron with sliding velocity in the range of 40-100 m/s. Experimental results indicated that, under very high sliding velocity, dry sliding properties of the materials were influenced by combination effects of amount of friction heat produced, heat conduction ability, and melting point of the materials. Increasing sliding velocity and contacting pressure decreased the differences of tribological properties between two materials tested. Aluminum composites reinforced with SiC particles exhibited good performance at high sliding velocity （〉100 m/s）.

关 键 词：高速干滑动 铝基复合材料 蠕墨铸铁 摩擦磨损特性 

分 类 号：TH117.3[机械工程—机械设计及理论]