采用模压／烧结工艺制备了PTFE／7075铝合金镶嵌型自润滑复合材料,在往复式摩擦磨损试验机上进行了摩擦磨损试验,用扫描电镜观察了复合材料磨损后的表面形貌,并探究了其磨损机理。结果表明:在试验条件下,稳态后摩擦温度为51℃,摩擦因数为0．087,磨损率为0．38×10-3mm3／(Nm),和非镶嵌型PTFE基复合材料相比,导热性和耐磨性大大提高,而摩擦因数无明显增加;稳定磨损阶段主要表现为粘着磨损,同时伴有轻微磨粒磨损,磨损后期局部呈现疲劳特征。 PTFE / 7075 aluminum alloy mosaic self-lubricating composite material was prepared by compression molding and sintering process. The friction and wear test was carried out on the reciprocating friction and wear tester. The surface morphology of the composite after abrasion was observed by SEM. Wear mechanism. The results show that under the experimental conditions, the friction temperature is 51 ℃, the friction coefficient is 0.087 and the wear rate is 0.38 × 10-3mm3 / (Nm). Compared with non-mosaic PTFE-based composites, Thermal conductivity and wear resistance greatly improved, but no significant increase in the friction coefficient; stable wear stage mainly for the adhesive wear, accompanied by a slight abrasive wear, wear the latter part of the local fatigue characteristics.