Tribology Research Institute Department of Mechanical Engineering Southwest Jiaotong University Chengdu 610031 People's Republic of China;
Tribology Research Institute Department of Mechanical Engineering Southwest Jiaotong University Chengdu 610031 People's Republic of China;
Tribology Research Institute Department of Mechanical Engineering Southwest Jiaotong University Chengdu 610031 People's Republic of China;
Tribology Research Institute Department of Mechanical Engineering Southwest Jiaotong University Chengdu 610031 People's Republic of China;