脂肪酰基氨基酸在矿物润滑油中的摩擦磨损特性.pdf

第29卷 第3期 总第131期 Vol29 No3 Journal of Materials Science Engineering Jun. 2011 2011) 1 2 1 3 1 1 1 , , , , , , (1., 401311;2., 400050; 3., 400050) VI 350 , ( SEM) X (XPS) ,, , ; ; ; :O623.626 :A Friction and Wear Characteristics of Fatty Acyl Amino Acids in Mineral Lu ricating Oil 1 2 1 3 1 CHEN Boshui , HUANG Weijiu , SUN Xia , YU Ying , FANG Jianhua , 1 1 WANG Jiu , WU Jiang (1. Dept. of Petrochemistry, Logistical Engineering University, Chongqing 401311, China; 2. College of Materials Science and Engineering, Chongqing University of Technology, Chongqing 400054, China; 3. College of Bioengineering, Chongqing University of Technology, Chongqing 400054, China) A stract Effects of lauroyl glutamine, lauroyl glycine and lauroyl alanine on the friction and wear characteristics of VI 350 mineral lubricating oil were evaluated by using a fourball friction tester. The topographies and chemical features of theworn surfaces wereanalyzed by scanning electron microscopy (SEM) and Xray photoelectron spectroscopy ( XPS) , respectively. Results indicated that the fatty acyl amino acids effectively improved antiwear and frictionreducing abilities of VI 350 lubricating oil. Improvement of anti wear andfrictionreducing abilities of theoil by amino acids was mainly ascribed to the formation of a composite boundary lubrication film due to the adsorptions and triboreactions of amino acids. Key words fatty acyl amino acid; mineral lubricating oil; friction; wear