The friction and wear properties and mechanical properties of bronze/PTFE filled with different content of namrAl2O3 were studied. The worn surfaces of composites were investigated by SEM as well as the abrasion mechanism. The results showed that nano-Al2O3 and bronze exhibited good synergistic effects on the wear resistance of PTFE composites. The wear resistance of PTFE composites filled with nano-Al 2 O 3 and bronze improved greatly but the tensile strength and elongation at break of composites decreased. The wear wide scar of composites filled with 40% bronze and 5% nano-Al203 decreased from 12. 0 mm to 5. 0 mm, and the volumetric wear rate decreased from 171. 40 x l0‐6mm /( N o m) to 12. 11 × 10 ‐6 mm3/( N o m).%考察了不同含量的纳米Al2O3对青铜粉/聚四氟乙烯(PTFE)摩擦磨损性能和物理机械性能的影响,采用扫描电镜(SEM)观察了复合材料的磨损表面,并分析和探讨了磨损机理.研究发现,纳米A12O3和青铜粉复合填充可以大大提高PTFE复合材料的耐磨性,表现出良好的协同作用,但会降低复合材料的拉伸强度和断裂伸长率.添加5％纳米Al2O3后,40％青铜粉/PTFE复合材料的磨痕宽度从12.0 mm降低为5.0 mm,体积磨损率从171.40×10-6mm3/(N·m)降低为12.11×10-6mm3/(N·m).
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