›› 2017, Vol. 19 ›› Issue (1): 46-54.

• Lubrication Research • 上一篇    下一篇

石墨烯作为锂基润滑脂添加剂的摩擦学性能研究

王晶1,郭小川1,何燕1,蒋明俊1,郭婉晴2,张源涛3,孙蓉4   

  1. 1. 后勤工程学院 军事油料应用与管理工程系
    2. 解放军92880部队
    3. 武警后勤学院
    4. 重庆商务职业学院
  • 收稿日期:2016-11-23 修回日期:2017-02-20 出版日期:2017-03-31 发布日期:2017-03-31
  • 通讯作者: 郭小川 E-mail:1418718262@qq.com
  • 作者简介:2016-12-30
  • 基金资助:
    军用润滑脂通用化论证研究;重庆市研究生科研创新项目;后勤工程学院青年科学基金项目资助

Tribological characteristics of graphene as lithium grease additive

Jing WANG1, 2,   

  • Received:2016-11-23 Revised:2017-02-20 Online:2017-03-31 Published:2017-03-31

摘要: 利用四球机研究了石墨烯和石墨作为锂基润滑脂添加剂的摩擦学性能。采用扫描电镜和X射线光电子能谱研究了磨损表面的微观形貌和表面元素含量及化合态。结果表明石墨烯的添加使锂基润滑脂的摩擦学性能得到的显著的提升,摩擦过程中,摩擦副表面形成了石墨烯的吸附膜和层积膜以及由FeO, Fe2O3, FeOOH和LiOH组成的反应膜,正是这些复合膜的综合作用,使得润滑脂的摩擦性能得到了进一步的提升。

关键词: 石墨烯, 锂基润滑脂, 摩擦学性能, 摩擦机理

Abstract: The tribological properties of graphene (GN) and graphite (G) as lubricant additives in lithium greases were investigated with a four-ball tribotester. The micro-morphology as well as the content and chemical states of elements on the worn surfaces were characterized by Scanning Electron Microscope (SEM) and X-ray Photoelectron Spectroscopy (XPS). The results show that the tribological performance of lithium grease could be significantly improved by the addition of graphene. In the friction process, an adhesion film and deposition film consisted of graphene as well as a tribochemical reaction film composed of FeO、Fe2O3、FeOOH and LiOH could be formed on the tribosurface, these complex films account for the significantly tribological performance of lithium grease.

Key words: graphene, lithium grease, tribological properties, tribochemical mechanism