为探讨MoS_2/Ni复合材料的自润滑机理,采用薄膜分离技术从摩擦表面提取了MoS_2润滑膜,在透射电镜下研究其显微结构.结果表明,润滑膜中的MoS_2具有择优取向,其(0001)基础面平行于摩擦表面,形成了有助于润滑作用的织构.少量Ni在润滑膜中与MoS_2发生化学反应,生成了NiS_2微细颗粒. In order to investigate the self-lubricating mechanism of MoS_2 / Ni composites, the MoS_2 film was extracted from the tribological surface by means of membrane separation and the microstructure was studied by transmission electron microscopy. The results show that the MoS_2 film has a preferred orientation (0001) ) The basal plane is parallel to the friction surface, forming a texture that contributes to lubrication. A small amount of Ni chemically reacts with MoS_2 in the lubricant film to produce NiS 2 fine particles.