铝对铜基粉末冶金材料摩擦磨损性能的影响  

Effects of Al Content on Friction and Wear Properties of Copper Matrix Frictional Materials

作　　者：高飞[1] 朗剑通[1] 符蓉[1] 韩晓明[1] 

机构地区：[1]大连交通大学材料科学与工程学院,辽宁大连116028

出　　处：《润滑与密封》2008年第1期18-21,26,共5页Lubrication Engineering

基　　金：国家自然科学基金资助项目(50375025);国家863计划项目(2006AA03Z515).

摘　　要：采用粉末冶金工艺制备了含铝和石墨的铜基粉末冶金摩擦材料,利用定速摩擦试验机,分别在干、湿状态下,探讨了各摩擦速度条件下铝对材料摩擦磨损性能的影响规律。结果表明,铝有利于稳定摩擦因数,提高材料的耐磨性,原因在于铝提高了材料的硬度,从而降低摩擦面微凸体的变形程度。在干摩擦状态下,低速条件下的摩擦因数随铝含量增加而减小,高速条件下的摩擦因数变化不明显;湿摩擦状态,水膜的润滑作用降低了摩擦因数,铝含量增加,有利于提高低速摩擦条件的摩擦因数。高速摩擦条件下,由于离心作用和水分的加热蒸发,水膜的润滑作用降低,摩擦因数波动不显著。Copper matrix composites with aluminium and graphite were prepared through powder metallurgy.The effects of aluminium content,the dry and wet condition on friction performance of the materials were studied with friction speed of 3～47 m/s,by means of a constant speed friction tester.The results show that aluminium is beneficial to stabilizing friction coefficient and decreasing wear rate due to aluminium increasing the hardness of materials,leading to reduce the asperity deformation.Under the condition of dr...

关 键 词：铜基摩擦材料 铝 摩擦磨损 湿摩擦 

分 类 号：TG115.58[金属学及工艺—物理冶金]