纳米Al2O3改性聚甲醛的摩擦磨损性能.pdfVIP

第21卷 第6期 材 料 研 究 学 报 Vl01．21 NO．6 2 0 0 7年12月 CHINESE J0URNAL 0F MATERIALS RESEARCH December 2 0 0 7 纳米A12Oa改性聚甲醛的摩擦磨损性能 木 孙斓珲 杨振国 李小慧。 1．复旦大学材料科学系 上海200433 2．上海材料研究所 上海 200437 摘 要 制备纳米粒子A1203填充改性的聚甲醛(POM)纳米复合材料，在干摩擦和油润滑条件下研究了纳米粒子的加入对 POM纳米复合材料摩擦磨损性能的影响，结果表明：尽管POM／A1203纳米复合材料的干摩擦性能有所下降，但是油润滑性 能得到了大幅度的提高，且当纳米A1203的含量为9％时，油润滑性能达到最佳．润滑油的存在提高了纳米粒子的活动性，并且 纳米粒子的表面活性可以填平磨痕并增强转移膜与对偶面的粘结强度． 关键词 复合材料，聚甲醛，纳米复合材料，干摩擦，油润滑 分类号 TB332 文章编号 1005．3093(2007)06．0654．05 Tribological properties of nano-A1203 modified PoM nanoCom DOSltes SUN Lanhui YANG Zhenguoh LI xiaohui 1．Department 0l Materials Science，Fudan University。Shanghai 20o433 2．Shanghai Research Institute of Materials，Shanghai 20O437 Supported by the Shanghai Science＆Technology Development Foundation No．06DZ22012． Manuscript received January 15，2007；in revised form May 16，2007． ro whom correspondence should be addressed，Tel：(021E-mail：zgyang@fudan．edu，ca ABSTRACT Polyoxymethylene fP0M)nanocomposites with various contents of nano—AI203 were prepared．the infIuence of nano-particles on tribologicaI properties of P0M Under dry friction and 0iI Iu— bricated condition were investigated．Results indicate that：P0M nanocomposite with 9％ nan0一AI203 have the best friction and wear properties．Nanoparticles are more effective in enhancing the friction and wear properties of P0M nanocomposites under oiI Iubricated condition than dry sliding condition．The flowability of Iubrication oils can broaden the activity range of nanoparticles and nanoparticles Iing in the roughness of COUn-terpart can strengthen