Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films | |
Department | 固体润滑国家重点实验室(LSL) |
Qian Jia1,2; Zaixiu Yang1,2; Lei Sun3; Kaixiong Gao1,2; Bin Zhang1,2; Xinagkai Zhang1,2; Junyan Zhang1,2 | |
The second department | 纳米润滑课题组 |
2021-10-08 | |
Source Publication | Carbon |
Issue | 186Pages: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 0.05–0.40. 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 (a-C: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. |
DOI | https://doi.org/10.1016/j.carbon.2021.10.016 |
URL | 查看原文 |
Indexed By | SCI |
If | 9.594 |
Language | 英语 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/27621 |
Collection | 固体润滑国家重点实验室(LSL) |
Affiliation | 1.固体润滑国家重点实验室 2.材料科学与光电工程研究中心 3.中国科学院材料磨损与防护重点实验室 |
Recommended Citation GB/T 7714 | Qian Jia,Zaixiu Yang,Lei Sun,et al. Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films[J]. Carbon,2021(186):180-192. |
APA | Qian Jia.,Zaixiu Yang.,Lei Sun.,Kaixiong Gao.,Bin Zhang.,...&Junyan Zhang.(2021).Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films.Carbon(186),180-192. |
MLA | Qian Jia,et al."Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films".Carbon .186(2021):180-192. |
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Catalytic superlubri(5234KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text |
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