以铜基粉末冶金材料/铬青铜为摩擦副,模拟电力机车接触网中受电弓滑板和导线的服役条件,在销-盘式摩擦磨损试验机上进行了载流摩擦学特性研究。研究表明,随着电流的增大,摩擦系数呈下降趋势,磨损率呈上升趋势。试验较低电流(40A和60A)条件下,摩擦表面形成一氧化层;试验较高电流(80A和100A)条件下,摩擦表面覆盖有熔融物。载流条件下,销试样材料表面不断发生氧化,较低电流时,摩擦表面覆盖着一层Fe的氧化物;较高电流时,试样由于表面温度更高,形成Cu的氧化物。 Based on the service conditions of the pantograph slide and wire in the catenary of the electric locomotive with the copper-based powder metallurgy material / chrome bronze as the friction pair, the tribological properties of the current-carrying flow were studied on a pin-disk friction and wear tester. The research shows that with the increase of current, the friction coefficient shows a downward trend and the wear rate shows an upward trend. Under the conditions of lower current (40A and 60A), the friction surface formed an oxide layer; under the conditions of higher current (80A and 100A), the friction surface was covered with a melt. Under the current-carrying condition, the surface of the pin specimen material is continuously oxidized. At lower current, the friction surface is covered with a layer of Fe oxide. At higher current, the specimen forms a Cu oxide due to the higher surface temperature.