[1] Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China
[2] China Natl Heavy Duty Truck Grp Co Ltd, Tech Dev Ctr, Jinan 250101, Shandong, Peoples R China
[3] Yantai Univ, Sch Environm & Mat Engn, Yantai 26445, Peoples R China
[4] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China