1. School of Mechanical Engineering, Hefei University of Technology, Hefei 230000, China
2. College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310023, China
3. Zhejiang Changsheng Slide Bearing Co., Ltd., Jiaxing 314100, China
4. State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China