摘要
利用MM-200型摩擦磨损试验机研究了PTFE/Al_2O_3纳米复合材料的摩擦磨损性能,并采用扫描电子显微镜观察、分析了试样磨屑形状及磨损机理。结果表明,经表面处理的纳米Al_2O_3能明显提高PTFE的耐磨损性并改变其磨屑形成机理;当表面处理纳米Al_2O_3含量为3％时,PTFE纳米复合材料的磨损量最小,但在试验范围内,表面处理纳米Al_2O_3含量变化对PTFE纳米复合材料的耐磨损性影响不大,而PTFE纳米复合材料的摩擦系数则随表面处理纳米Al_2O_3含量增加而略有增大,导致PTFE磨损的机理主要是粘着磨损。
The dry sliding wear properties of PTFE/nano-Al2O3 composites were tested on the model MM -200 tester. Scanning Electron Microscopy ( SEM ) was employed to examine the shape of wear debris and wear mechanism. The results indicate that the surface treatment of nano-Al2O3 can improve the wear resistance of PTFE significantly, and can change the mechanism of wear debris. When the content of surface-treated nano-Al2O3 is 3% , the wear mass loss is the smallest but the effects of filled surface treated nano-A12O3 content change is slightly. The friction coefficient of PTFE composites increases with the increasing of nano-Al2O3 content. The main wear mechanism is cutting and adhering.
出处
《工程塑料应用》
CAS
CSCD
北大核心
2003年第9期53-55,共3页
Engineering Plastics Application
