纳米金属/层状硅酸盐复合润滑添加剂的摩擦学性能  

Tribological properties of the nano-metal/phyllosilicate composite as lubricant additive

作　　者：许一[1] 张保森[1,2] 徐滨士[1] 高飞[1] 史佩京[1] 

机构地区：[1]装甲兵工程学院装备再制造技术国防科技重点实验室,北京100072 [2]上海交通大学上海市激光制造与材料改性重点实验室,上海200240

出　　处：《功能材料》2011年第8期1368-1371,1375,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50904072;50735006;50805146);国家重点基础研究发展计划(973计划)资助项目(2007CB607601);博士后基金资助项目(20090461452)

摘　　要：采用机械化学法制备了纳米铜/蛇纹石复合润滑材料,利用微动摩擦磨损试验机考察了其作为润滑油添加剂的摩擦学性能,借助纳米压痕仪(nano-in-denter)、扫描电子显微镜(SEM)、能量色散谱仪(EDS)及光电子能谱仪(XPS)对磨损表面进行了表征,探讨了减摩抗磨机理。结果表明复合润滑材料具有优异的摩擦学性能,其摩擦因数及磨损率分别较基础油降低约16.4%和69.2%。复合润滑剂颗粒参与了摩擦界面复杂的理化作用,形成了致密光滑的保护膜,主要由Fe、Si等元素组成,具有较高的微观力学性能,提高了摩擦表面的磨损抗力,显著地降低了摩擦磨损。A copper nanoparticles/serpentine composite as lubricating material was prepared using mechano-chemical method.The tribological properties of the as-prepared material as oil additive were evaluated by employing an oscillating friction and wear tester.The worn surface was characterized by means of nano-indenter,scanning electron microscopy（SEM） equipped with energy dispersive spectroscopy（EDS） and X-ray photoelectron spectrometer（XPS）.The mechanism for the friction and wear reducing properties was discussed.Results indicate the composite lubricating material exhibits excellent tribological properties.The friction coefficient and wear rate decrease by 16.4% and 69.2% compared to those of the base oil,respectively.The composite lubricating additive particles have participated in the complex physicochemical interactions at the friction interface and induced the formation of a smooth and compact tribofilm enriched in Fe,Si elements on the worn surface,which possesses high nano-mechanical properties,as improves the wear resistance and results in the significantly reduced friction and wear.

关 键 词：矿物微粉 纳米铜颗粒 添加剂 摩擦磨损 

分 类 号：TG117.3[金属学及工艺—物理冶金]