文献类型：期刊文献

英文题名：Synergistic effect of physical and chemical reactions on friction behaviors of DLC films in humid air

作者：Wang, Yaoze[1];Tan, Liming[2];Yang, Linyan[3];Zhou, Runhua[4];Bai, Lichun[1,5]

机构：[1]Cent South Univ, Sch Traff & Transportat Engn, Key Lab Traff Safety Track, Minit Educ, Changsha 410075, Peoples R China;[2]Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China;[3]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[4]Nanyang Technol Univ, Energy Res Inst NTU ERIN, 50 Nanyang Ave, Singapore 639798, Singapore;[5]Xi An Jiao Tong Univ, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China

年份：2022

卷号：33

外文期刊名：MATERIALS TODAY COMMUNICATIONS

收录：;EI(收录号：20223712704801);WOS:【SCI-EXPANDED(收录号:WOS:000876428900004)】；

基金：We acknowledge financial support of the National Natural ScienceFoundation of China (51905548) , and the open project of State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University (SV2019-KF-24) . This work was supported in part by the High Performance Computing Center of Central South University.

语种：英文

外文关键词：Tribochemistry; Diamond -like carbon; Humid air; ReaxFF MD simulation; Friction

摘要：Effect of tribochemistry on the friction behavior of diamond-like carbon (DLC) films in humid air has been investigated via ReaxFF simulation. The tribochemical reactions can induce the generation of functional groups and thus cause a passivated contact interface to reduce friction. Moreover, the tribochemical reactions can generate many gas molecules which can prevent the formation of interfacial C-C covalent bonds and thus reduce interfacial adhesions. The lamellar structure which is due to the common effect of high temperature and the pull of the carbon chains can reduce friction. It is found that the lamellar structure formed from physical reactions allows a large diffusion space for water and oxygen molecules to rapidly react with certain sites, and the functional groups formed from the chemical reactions can stabilize the lamellar structures under external loading and lateral sliding. Therefore, the physical and chemical reactions of DLC films show a synergistic effect on their friction behaviors in humid air.