作　　者： ; ; ; ; ;

机构地区： 中南大学材料科学与工程学院粉末冶金国家重点实验室

出　　处： 《非金属矿》 2006年第5期59-62,共4页

摘　　要： 通过粉末冶金方法制备了铜基摩擦材料,在经技术改进后的MM-1000摩擦试验机上对其在不同压力下的摩擦磨损性能进行了研究,结果表明:随着压力的增大,材料的摩擦系数呈降低趋势,在真空中的摩擦系数小于大气中的摩擦系数;真空中材料的摩擦系数稳定度高于大气环境中的,材料的磨损随压力的变化在两种环境下呈现出相反的变化形式。摩擦表面形成的摩擦膜对材料的摩擦磨损性能具有重要的影响;随着压力的增大,材料在真空中的磨损机理由以磨粒磨损为主逐渐转变为以黏着磨损为主。 The tribological performance of Cu-based space docking friction material made by P/M technology was investigated in MM-1000 device under different contact pressure in atmosphere and in vacuum, respectively. It was found that friction coefficient decreased with the pressure increasing. Friction coefficient was lower and the stable of friction coefficient was higher in vacuum than in atmosphere. Mass loss of materials in vacuum compared with in atmosphere was adverse variety as the pressure growing. The friction film formed under different pressure on friction surface is important to tribological performance of material. The friction and wear mechanism of material was transformative from abrasive wear to adhesive wear as the pressure increasing.

关 键 词： 摩擦材料 空间对接 铜基粉末冶金 压力 摩擦磨损性能

领　　域： [机械工程]