Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films | |
Department | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 |
Jia Qian; Yang Zaixiu; Zhang Bin | |
The second department | 纳米润滑中心607 |
2022 | |
Source Publication | carbon |
Volume | 186Issue:8Pages:180-192 |
Abstract | Though amorphous carbon films are kinds of most distinguished lubricant materials, the friction coefficients 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 graphene 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 (aC:H) films’ surface is comparable to that between graphene layers, resulting in low interfacial interactions 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 |
Keyword | Catalytic Gold Superlubricity Hydrogenated amorphous carbon films Friction Graphene |
If | 10.9 |
Language | 英语 |
compositor | 第一作者单位 |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/30514 |
Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 |
Corresponding Author | Zhang Bin |
Affiliation | State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science |
Recommended Citation 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. |
Files in This Item: | ||||||
File Name/Size | DocType | Version | Access | License | ||
Catalytic superlubri(5234KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment