Catalytic superlubricity via in-situ formation of graphene during sliding friction on Au@a-C:H films
Qian Jia2,3; Zaixiu Yang2,3; Lei Sun1; Kaixiong Gao2,3; Bin Zhang2,3; Xinagkai Zhang2,3; Junyan Zhang2,3
刊名Carbon
2021-10-08
期号186页码:180-192
DOIhttps://doi.org/10.1016/j.carbon.2021.10.016
英文摘要

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.

 

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语种英语
WOS记录号WOS:000708677300006
内容类型期刊论文
源URL[http://ir.licp.cn/handle/362003/27621]  
专题兰州化学物理研究所_固体润滑国家重点实验室
作者单位1.中国科学院材料磨损与防护重点实验室
2.固体润滑国家重点实验室
3.材料科学与光电工程研究中心
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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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