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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