Effect of temperature and mating pair on tribological properties of DLC and GLC coatings under high pressure lubricated by MoDTC and ZDDP  

作　　者：Kang LIU Jia-jie KANG Guang-an ZHANG Zhi-bin LU Wen YUE 

机构地区：[1]School of Engineering and Technology,China University of Geosciences(Beijing),Beijing 100083,China [2]Key Laboratory of Deep GeoDrilling Technology of Ministry of Natural Resources,Beijing 100083,China [3]Zhengzhou Institute,China University of Geosciences(Beijing),Zhengzhou 451283,China [4]State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China

出　　处：《Friction》2021年第6期1390-1405,共16页摩擦（英文版）

基　　金：This work was supported by the Beijing Municipal Natural Science Foundation(3182032);the National Natural Science Foundation of China(41772389);the Pre-Research Program in National 13th Five-Year Plan(61409230603);Joint Fund of Ministry of Education for Pre-research of Equipment for Young Personnel Project(6141A02033120).

摘　　要：Diamond-like carbon(DLC)and graphite-like carbon(GLC)coatings have good prospects for improving the surface properties of engine parts.However,further understanding is needed on the effect of working conditions on tribological behaviors.In this study,GLC and two types of DLC coatings were deposited on GCr15 substrate for investigation.The friction and wear properties of self-mated and steel-mated pairs were evaluated.Two temperatures(25 and 90℃),three lubrication conditions(base oil,molybdenum dithiocarbamate(MoDTC)-containing oil,MoDTC+zinc dialkyldithiophosphate(ZDDP)-containing oil),and high Hertz contact stress(2.41 GPa)were applied in the experiments.The results showed that high temperature promoted the effect of ZDDP on steel-mated pairs,but increased wear under base oil lubrication.The increased wear for steel-mated pairs lubricated by MoDTC-containing oil was due to abrasive wear probably caused by MoO_(3) andβ-FeMoO_(4).It was also found that in most cases,the tribological properties of self-mated pairs were better than those of steel-mated pairs.

关 键 词：diamond-like carbon(DLC) graphite-like carbon(GLC) mating pair temperature oil additives 

分 类 号：TH117.1[机械工程—机械设计及理论]