固体润滑剂对稻壳基陶瓷材料干摩擦行为的影响  

Effects of Solid Lubricants on the Tribological Performance of Rice Husk Ceramic Composites

作　　者：王棒棒 胡恩柱[2] 胡献国[1] 史彬 杨伟[2] 胡坤宏[2] 宋汝鸿[1] 杨炳训 WANG Bangbang;HU Enzhu;HU Xlanguo;SHI Bin;YANG Wei;HU Kunhong;SONG Ruhong;YANG Bingxun(School of Mechanical Engineering, Hefei University of Technology, Anhui Hefei, 230009 China;Hefei University, Department of Chemistry and Materials Engineering, Anhui Hefei, 230601 China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009 [2]合肥学院化学与材料工程系,安徽合肥230601

出　　处：《摩擦学学报》2018年第2期170-179,共10页Tribology

基　　金：国家自然科学基金项目(51505121;51403048);安徽省自然科学基金项目(1608085QE119);安徽高校自然科学研究重点项目(KJ2017A536);大学生创新创业训练计划项目(201611059112;201611059113和201611059174)资助~~

摘　　要：为实现稻壳资源的综合利用,本文作者以稻壳粉为原料,酚醛树脂为粘结剂,石墨和二硫化钼为固体润滑剂,制备出稻壳基陶瓷复合材料,并研究其摩擦学性能,为稻壳基陶瓷材料在滑动轴承和电机电刷领域的应用奠定基础.在可控氛围微型摩擦磨损试验仪上,研究了不同载荷和转速下,石墨和二硫化钼对稻壳基陶瓷颗粒复合材料的摩擦学行为的影响.结果表明:添加质量分数10%石墨(或二硫化钼)于稻壳基材料中,材料的抗磨和减摩性能均得到明显的改善.在一定的载荷和速度下,添加石墨的稻壳基陶瓷复合材料的摩擦学性能优于添加二硫化钼稻壳基陶瓷复合材料.其中,石墨复合材料容易在低载荷(或转速)下,形成致密的摩擦膜起到一定的抗磨减摩功效;而二硫化钼的复合材料摩擦过程容易形成磨屑,致使材料表面形成微坑,使得抗磨性能降低.在高载荷或高转速时,两者均会因摩擦力诱导材料表面发生疲劳磨损,出现大量的坑槽,加剧磨损.In order to realize the comprehensive utilization of rice husk resources, rice husk based ceramic （RBC） composites were prepared by using rice husk powder as a raw material, phenolic resin as the binder, graphite and molybdenum disulfide as solid lubricants. Effects of solid lubricants （graphite and molybdenum disulfide） on the tribological behavior of RBC composites were investigated using a controllable atmosphere tribometer in order to extend the application of RBC particles （e.g. sliding bearing and electric brush）. Results show that the addition of 10% graphite （or molybdenum disulfide） in the RBC composites, the wear resistance and friction reduction properties of the composites were significantly improved. The tribological properties of RBC composites with 10% graphite were better than the RBC composites with addiion of molybdenum disulfide. Among them, the graphite-containing composites produced a dense friction film under low load （or velocity）, and improved the friction reduction and wear resistance. The wear debris of molybdenum disulfide-containing composites produced, abrasive wear and led to higher wear. Besides, the wear of both composites became serious in high load and velocity conditions due to friction induced material surface fatigue wear as evident by in a large number of pits.

关 键 词：稻壳基陶瓷颗粒 固体润滑剂 干摩擦 摩擦磨损机制 

分 类 号：TH117[机械工程—机械设计及理论]