(中南大学 粉末冶金国家重点实验室, 长沙 410083)
摘 要: 在气氛保护下采用热压工艺制备了具有梯度结构的Ag-Cu-MoS2电刷材料， 对该材料的制备工艺、 显微结构、 电性能和摩擦磨损性能等进行了分析。 结果表明： 在热压过程中， 由于氩气的保护作用， 虽然工艺温度达到850 ℃， MoS2并未发生氧化反应， 保障了材料的自润滑性能； 所用工艺较好地实现了梯度结构的构造及材料的制备， MoS2均匀而弥散地分布于Ag-Cu基体中， 该材料具有优良的电性能、 摩擦磨损性能及焊接性能。
关键字: Ag-Cu-MoS2电刷材料； 显微结构； 导电性； 摩擦磨损
（ State Key Laboratory of Powder Metallurgy, Central South University,
Changsha 410083, China）
Abstract: Ag-Cu-MoS2 brush materials with a graded structure was produced by hot press process in protective atmosphere. The processing, microstructure, conductivity and wear properties of Ag-Cu-MoS2 brush materials were studied. The results show that MoS2 is not oxidized in the process, and Ar2 has protection effect. The materials and the graded structure can be constructed by proper process-control, and MoS2 is distributed homogeneously in the Ag-Cu matrix. The Ag-Cu -MoS2 brush materials have good conductivity, wear properties and welding performance.
Key words: Ag-Cu-MoS2 brush materials; microstructure; conductivity; wear
