采用内氧化法制备Cu-La2O3复合材料。以该复合材料为销试样,轴承钢为盘试样,进行载流条件下的高速摩擦磨损试验,并对销试样摩擦表面进行微观形貌分析。结果表明:在试验条件下,Cu-La2O3复合材料的磨损率随电流的增加而增大,随载荷增加先降低后增加。复合材料的干滑动摩擦磨损机制主要是磨粒磨损、粘着磨损及电弧侵蚀磨损。 Preparation of Cu-La2O3 Composites by Internal Oxidation. Taking the composite material as the pin sample and the bearing steel as the disk sample, the high-speed friction and wear test under the current carrying conditions was carried out. The micro-topography of the friction surface of the pin specimen was analyzed. The results show that under the experimental conditions, the wear rate of Cu-La2O3 composites increases with the increase of current and then decreases with the increase of load. Dry sliding friction and wear mechanisms of composite materials are mainly abrasive wear, adhesive wear and arc erosion wear.