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锂盐添加剂对润滑油摩擦学性能和导电性的影响
引用本文:葛翔宇,夏延秋,赵小培,舒宗英.锂盐添加剂对润滑油摩擦学性能和导电性的影响[J].摩擦学学报,2015,35(3):254-258.
作者姓名:葛翔宇  夏延秋  赵小培  舒宗英
作者单位:1. 能源动力与机械工程学院华北电力大学,北京,102206
2. 能源动力与机械工程学院华北电力大学,北京102206;中国科学院兰州化学物理研究所固体润滑国家重点实验室,甘肃兰州730000
摘    要:采用MFT-R4000型往复摩擦磨损试验机测试四氟硼酸锂(Li BF4),双三氟甲烷基磺酰亚胺锂(Li NTf2)和六氟磷酸锂(Li PF6)这3种锂盐作为润滑油添加剂时对基础油的摩擦学性能的影响,利用OLS4000型三维形貌测量仪测量钢块的磨损体积,并利用扫描电子显微镜(SEM)观察钢块磨痕的表面形貌.采用DDSJ-308A型电导率测定仪测量不同锂盐含量下,润滑油的盐度和电导率的变化情况,阐述锂盐含量和润滑油电导率之间存在的关系.研究结果表明:锂盐能够降低润滑油的摩擦系数,增强其抗磨性,具有良好的摩擦学性能;同时锂盐的加入使基础油的导电性得到很大提高.

关 键 词:锂盐  润滑油  摩擦磨损  盐度  电导率

Tribological Properties and Electrical Conductivity of Lithium Salts in Lubricant Oil
GE Xiang-yu , XIA Yan-qiu , ZHAO Xiao-pei , SHU Zong-ying.Tribological Properties and Electrical Conductivity of Lithium Salts in Lubricant Oil[J].Tribology,2015,35(3):254-258.
Authors:GE Xiang-yu  XIA Yan-qiu  ZHAO Xiao-pei  SHU Zong-ying
Institution:School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China;1. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China;2. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China;School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China;School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
Abstract:The influence of lithium tetrafluoroborate (LiBF4),lithium bis(trifluoromethanesulfonyl) imide (LiNTf2) and lithium hexafluorophosphate (LiPF6) as additives on tribological properties of base oil is investigated using an MFT-R4000 reciprocating friction and wear tester. The wear volumes were determined by an OLS4000 3D topography measurement profiler. The morphologies of worn surfaces of the discs were examined using a scanning electron microscope. The salinity and conductivity of the oil were measured using a DDSJ-308A conductivity meter. And the relationship between the lithium salts concentration and conductivity was elucidated. The results show that the lithium salts reduced the friction coefficient and enhanced the anti-wear property. The lithium salts greatly improved the conductivity of the base oil.
Keywords:lithium salts  lubricant oil  friction and wear  salinity  conductivity
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