Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films
Jia Qian; Yang Zaixiu; Zhang Bin
刊名carbon
2022
卷号186期号:8页码:180-192
关键词Catalytic Gold Superlubricity Hydrogenated amorphous carbon films Friction Graphene
英文摘要

Though amorphous carbon films are kinds of most distinguished lubricant materials, the friction co efficients of commercial amorphous carbon films are in the range of 0.05e0.40. To reduce the friction coefficients of those amorphous carbon films from the order of 0.01 to 0.001 range is still a big challenge. In order to solve the problem, in present work, a new strategy, called catalytic superlubricity, is proposed and carried out to achieve superlubricity by in-situ formation of graphene via introducing gold onto hydrogenated amorphous carbon (Au@a-C:H) film during friction. The results show that mulilayer gra phene along with oriented polyolefin-like structures are formed due to the catalysis of Au nanoparticles, which is embedded in amorphous carbon matrix. Furthermore, the density functional theory calculations indicates that interlayer binding energy between graphene and the hydrogenated amorphous carbon (a C:H) films’ surface is comparable to that between graphene layers, resulting in low interfacial in teractions between sliding interfaces for low friction. Then, the low interfacial interactions lead to superlubricity with a friction coefficient of 0.003. This study opens up a new routing for facile and scale up fabrication of superlubricant a-C:H films in industrial applications

语种英语
内容类型期刊论文
源URL[http://ir.licp.cn/handle/362003/30514]  
专题兰州化学物理研究所_先进润滑与防护材料研究发展中心
通讯作者Zhang Bin
作者单位State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science
推荐引用方式
GB/T 7714
Jia Qian,Yang Zaixiu,Zhang Bin. Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films[J]. carbon,2022,186(8):180-192.
APA Jia Qian,Yang Zaixiu,&Zhang Bin.(2022).Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films.carbon,186(8),180-192.
MLA Jia Qian,et al."Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films".carbon 186.8(2022):180-192.
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