摘要
采用热挤压注模方法制备了含不同稀土化合物如 Ce O2 ,La F3,La2 O3的尼龙 1 0 1 0 ( PA1 0 1 0 )复合材料 .测定了复合材料的密度和硬度 ,在 MM- 2 0 0型环 -块实验机上考察了其摩擦磨损性能 ,用光学显微镜观察了材料表面磨痕和转移膜形貌 .研究结果发现 ,添加稀土化合物可改善PA1 0 1 0的摩擦学性能 ,尤其是填充 La2 O3的 PA1 0 1 0复合材料的减摩、耐磨性能均最佳 .PA1 0 1 0的磨损主要表现为粘着、疲劳和塑性变形 ,其转移膜不连续 ,且有脱落现象 .PA1 0 1 0 - 1 5 % La2 O3复合材料的磨损主要为磨粒磨损 ,其转移膜致密光滑 ,薄而完整 。
PA1010 composites filled with several kinds of rare earth compounds such as CeO2, LaF3 and La2O3 were prepared by hot squeezing injection mold method. The density and hardness were measured. The friction and wear behaviors of the composites were examined on a MM-200 ring-on-block wear tester. The morphologies of wear surfaces and transfer films were examined on an optical microscopy. It was found that filling CeO2, LaF3 and La2O3 to PA1010 could reduce the friction coefficient and wear rate, with the La2O3 in particular. The friction-reducing and wear resistance properties of PA1010-15% La2O3composite is the best. The wear mechanisms of PA1010 and PA1010 composites are different. The serious plowing, plastic deformation and fatigue wear are dominant for PA1010, and the transfer films of PA1010 on the counterface are not homogeneous and have tears in the films. The slight plowing governs wear is dominant for PA1010-15% La2O3 composite, the transfer films of PA1010-15% La2O3 composite on counterface are dense, smooth, thin and homogeneous. This conforms to the best wear resistance of PA1010-15% La2O3 composite.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2001年第5期476-479,共4页
Journal of China University of Mining & Technology
基金
江苏省应用基础研究资助项目 ( BJ2 0 0 0 0 30
