本文基于高温发汗自润滑材料的特征,建立了其润滑膜的覆盖率模型.利用广义W-M函数产生的粗糙表面,讨论了摩擦表面粗糙度、环境温度及材料参数等因素对发汗润滑膜覆盖率的影响.研究表明:通过降低摩擦表面粗糙度、提高基体材料孔隙率,固体润滑剂熔浸深度和环境温度可以增加摩擦表面边界润滑膜覆盖率,改善摩擦副的摩擦学性能.研究为高温发汗自润滑材料润滑控制及其摩擦副的设计提供理论依据. In this paper, based on the characteristics of high-temperature sweat self-lubricating material, the coverage rate model of lubrication film is established.Using the rough surface generated by the generalized WM function, the effects of friction surface roughness, ambient temperature and material parameters on the coverage rate of sweat lubrication film .The results show that the frictional surface properties can be improved by reducing the friction surface roughness, increasing the porosity of the matrix material, the immersion depth of the solid lubricant and the ambient temperature, and improving the tribological properties of the friction pair. Lubrication material lubrication control and friction pair design provides a theoretical basis.