目的 研究PTFE薄膜与激光织构化GCr15轴承钢配副在脂润滑条件下的摩擦学性能，探究微织构面积占有率和工况参数对摩擦学行为的影响规律。方法 采用二极管泵浦声光调Q Nd∶YAG激光器对下试样进行表面织构加工，在Rtec MFT-5000多功能摩擦磨损试验机上进行往复摩擦学试验，其中上试样为粘结PTFE薄膜的圆柱销，下试样为进行激光织构化的GCr15轴承钢滑块。结果 脂润滑介质下，PTFE与微织构表面耦合摩擦系数最低。在前期磨合阶段，不同微织构面积占有率的表面摩擦系数均有小幅度上升；试验中期，不同微织构面积占有率的表面摩擦系数区分度逐渐变大。当微织构面积占有率由10%上升为40%时，摩擦系数先减小后增大，且微织构面积占有率为20%时，表面摩擦系数最小，仅为0.032。脂润滑条件下，三种不同微织构面积占有率的试样随着载荷由20 N增加至100 N时，摩擦系数均出现下降趋势，且趋势逐渐趋缓。在低频率阶段的摩擦系数较大，高频率阶段摩擦系数较小。结论 脂润滑条件下，PTFE与微织构耦合是一种有效的复合减摩手段。随着织构面积占有率的提升，表面摩擦系数先减小后增大，随着载荷的增大，表面摩擦系数迅速下降；随着往复运动频率的增大，表面摩擦系数先上升再缓慢下降。当面积占有率为20%时，能获得较好的摩擦润滑性能。

The work aims to study the tribological properties of PTFE film and laser-textured GCr15 bearing steel under grease lubrication conditions, and the influence of micro-texturing density and working condition on tribological behavior. Surface texture processing of lower sample using diode-pumped acousto-optic Q-switched Nd: YAG laser, and reciprocating tribological tests were carried out on a Rtec MFT-5000 multifunctional friction and wear tester. The upper sample is a cylindrical pin bonded with PTFE film, and the lower sample is a GCr15 bearing steel slider textured by laser. It is found that in grease lubrication medium, the friction coefficient for PTFE coupling with micro-textured surface is lowest；The surface friction coefficient of different micro-texture area occupancy increased slightly in the early running-in stage; In the middle stage of the experiment, the difference of surface friction coefficient between different micro-texture area occupancy gradually increased; When the area occupancy of micro-texture increases from 10% to 40%, the friction coefficient first decreases and then increases, and when the area occupancy of micro-texture is 20%, the surface friction coefficient is the smallest (only 0.032). With the increase of load from 20 N to 100 N, the friction coefficient of three samples with different micro-texture area occupancy in grease lubrication medium decreases and the trend slows down gradually. The friction coefficient is larger in the low frequency stage and smaller in the high frequency stage. It is concluded that PTFE coupling with micro-texturing is an effective anti-friction method under grease lubrication. The surface friction coefficient first decreases and then increases with the increase of texture area occupancy, the surface friction coefficient decreases rapidly with the increase of load, and the surface friction coefficient first increases and then decreases slowly with the increase of reciprocating motion frequency. When the area occupancy is 20%, better friction and lubrication properties can be obtained.