Study on Tribology Performance of Different Lubricant Additives under Atmospheric Pressure and High Vacuum Conditions

作     者：Peng Qian Huang Zhiyang Yang He Song Haiqing Zhang Jianrong 

作者机构：Research Institute of Petroleum ProcessingSINOPEC 

出 版 物：《China Petroleum Processing & Petrochemical Technology》 (中国炼油与石油化工（英文版）)

年 卷 期：2016年第18卷第4期

页      面：81-91页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：Financial support from the SINOPEC Research Program(No.ST13164-19]) is gratefully acknowledged 

主　　题：anti wear additive high vacuum lubrication mechanism anti wear properties friction reducing properties 

摘      要：By using PAO-10 as the base oil, the tribological behavior of 11 additives under high vacuum condition was evaluated. By adopting some surface analytical instruments, such as scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and X-ray photoelectron spectroscopy(XPS), the tribological mechanisms of these additives were studied. In air, O_2 can react with metal to form metal oxide that can protect the surfaces of rubbing pair during the tribological tests. According to the theory of the competitive adsorption, the function of some active elements is weakened. In a vacuum environment, the additives contributed more to the lubrication performance. The sulfur-containing additives could react with Fe to produce Fe Sx and M—C bonds(M represents metal). They both had contributions to the lubrication. As for the phosphorus-containing additives, they only generated the phosphates during the tests. When the sulfur and phosphorus-containing additives were applied, the generated phosphates and Fe Sx had the primary contribution to the lubrication performance during the tests.