片状纳米石墨的制备及其作为润滑油添加剂的摩擦磨损性能  

Preparation and Tribological Properties of Graphite Nanosheets as Additive in Liquid Paraffin

作　　者：黄海栋[1] 涂江平[1] 干路平[2] 邹同征[1] 李春忠[2] 赵新兵[1] 

机构地区：[1]浙江大学材料科学与工程系,浙江杭州310027 [2]华东理工大学教育部超细材料重点实验室,上海200237

出　　处：《摩擦学学报》2005年第4期312-316,共5页Tribology

基　　金：上海市科学技术委员会科研计划资助项目(0325nm037).

摘　　要：采用搅拌球磨法制备了平均直径1 μm、厚度10～20 nm的片状纳米石墨;利用扫描电子显微镜、透射电子显微镜和X射线衍射仪分析了片状纳米石墨的微观形貌和组织结构;利用四球和销-盘式摩擦磨损试验机考察了片状纳米石墨作为液体石蜡添加剂的摩擦磨损性能.结果表明,片状纳米石墨能够显著提高润滑油的抗磨性能及承载能力,降低摩擦系数,其最佳添加量约为50 ppm.Graphite nanosheets with a mean diameter of 1μm and thickness of 10-20 nm were prepared by stirring ball milling. The morphology and structure of the graphite nanosheets were examined by means of scannine electron microscopy, transmission electron microscopy, and X-ray difraction. The effect of the graphite nanosheets as additive on the tribological properties of liquid paraffin was investigated using a fourball test rig and a pin-on-disk friction and wear tester. The results showed that the graphite nanosheets prepared using the stirring ball milling retained the crystal structure of the natural graphite. They as the additive contributed to effectively improve the load-carrying capacity and antiwear ability of the base oil. The optimal concentration of the graphite nanosheets in the liquid paraffin was suggested to be about 50μm, at which the optimized friction-reducing and antiwear abilities were recorded.

关 键 词：片状纳米石墨 添加剂 润滑油 摩擦磨损性能 

分 类 号：TH177.3[机械工程—机械制造及自动化]