Effects of magnetic ionic liquid as a lubricant on the friction and wear behavior of a steel-steel sliding contact under elevated temperatures

作     者：Jiajia JIA Guangbin YANG Chunli ZHANG Shengmao ZHANG Yujuan ZHANG Pingyu ZHANG Jiajia JIA;Guangbin YANG;Chunli ZHANG;Shengmao ZHANG;Yujuan ZHANG;Pingyu ZHANG

作者机构：Engineering Research Center for NanomaterialsHenan UniversityKaifeng 475004China Institute of PharmacyHenan UniversityKaifeng 475004China 

出 版 物：《Friction》 (摩擦（英文版）)

年 卷 期：2021年第9卷第1期

页      面：61-74页

核心收录：

学科分类：0817[工学-化学工程与技术] 08[工学] 080203[工学-机械设计及理论] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0802[工学-机械工程] 0801[工学-力学（可授工学、理学学位）] 

基　　金：the financial support provided by the National Natural Science Foundation of China(Grant Nos.51605143,21671053,51775168,and 51875172) the Scientific and Technological Innovation Team of Henan Province Universities(Grant No.19IRTSTHN024) 

主　　题：steel-steel sliding contact magnetic ionic liquid magnetic fluid lubricant tribological property lubrication mechanism 

摘      要：A magnetic ionic liquid(abridged as MIL)[C_(6)mim]_(5)[Dy(SCN)_(8)]was prepared and used as the magnetic lubricant of a steel-steel sliding *** tribological properties of the as-prepared MIL were evaluated with a commercially obtained magnetic fluid lubricant(abridged as MF;the mixture of dioctyl sebacate and Fe_(3)O_(4),denoted as DIOS-Fe_3O_4)as a *** lubrication mechanisms of the two types of magnetic lubricants were discussed in relation to worn surface analyses by SEM-EDS,XPS,and profilometry,as well as measurement of the electric contact resistance of the rubbed steel *** results revealed that the MIL exhibits better friction-reducing and antiwear performances than the as-received MF under varying test temperatures and *** is because the MIL participates in tribochemical reactions during the sliding process,and forms a boundary lubrication film composed of Dy_(2)O_(3),FeS,FeSO_(4),nitrogen-containing organics,and thioether on the rubbed disk surface,thereby reducing the friction and wear of the frictional ***,the MF is unable to form a lubricating film on the surface of the rubbed steel at 25°C,though it can form a boundary film consisting of Fe_(3)O_(4) and a small amount of organics under high ***,the excessive Fe_(3)O_(4) particulates that accumulate in the sliding zone may lead to enhanced abrasive wear of the sliding pair.