摘要
用热压成型法制备了纳米氧化铝填充超高分子量聚乙烯(UHMWPE)复合材料,采用销盘式摩擦磨损试验机考察了纳米粒子对复合材料摩擦磨损性能的影响;采用扫描电子显微镜观察了复合材料磨损表面形貌,并借助X射线能谱仪对试样磨损表面进行了微区分析。结果表明:UHMWPE/nano-A l2O3复合材料中的纳米A l2O3粒子含量不同,其磨损表面的碳元素含量也发生不同程度的变化。填充质量分数为15%的纳米A l2O3能较好地改善UHMWPE/nano-A l2O3复合材料的摩擦磨损性能,其磨损表面出现了明显的贫A l区和富A l区,且富A l区以“岛”的形式分布在贫A l区中。
Ultra high molecular weight polyethylene （UHMWPE） based composites filled with nano-Al2O3 were prepared by heat compression molding. The influences of nano-particulates on the friction and wear behavior of the composites were investigated on a pin-on-disc test rig. The worn surfaces of the composites were observed on a scanning electron microscope. The element content of the worn surfaces was analyzed on an energy dispersive X-ray detector. It is found that the element content of carbon in the worn surface occurrs the change in varying degrees with the change of nano-Al2O3 content in nano-Al2O3 filled UHMWPE composites. The UHMWPE composites filled with 15 % nano-Al2O3 record smaller friction coefficients and wear rates than pure UHMWPE. There are two obvious zones on the worn surfaces, one is lack of Al, the other is abundant in Al,and the latter distributes in the zone lack of M in the form of islands.
出处
《润滑与密封》
EI
CAS
CSCD
北大核心
2006年第10期65-67,共3页
Lubrication Engineering
基金
中国石油天然气集团公司石油科技中青年创新基金资助项目(W020311)
关键词
超高分子量聚乙烯
纳米氧化铝
摩擦学性能
磨损表面特征
ultra high molecular weight polyethylene （UHMWPE）
nanometer Al2O3
tribological behavior
wear surface characteristic
