Regulating Vacuum Tribological Behavior of a-C:H Film by Interfacial Activity | |
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 |
Pei Lulu1,2; Chen Weiqi3; Ju Pengfei4; Zhou Hong4; Xu Zhou4; Ji Li1; Ma Tianbao3; Li Hongxuan1; Liu Xiaohong1; Zhou Huidi1; Chen Jianmin1 | |
The second department | 磨损与表面工程组 |
2021 | |
Source Publication | Journal of Physical Chemistry Letters |
Issue | 12Pages:10333-10338 |
Abstract | A hydrogenated amorphous carbon (a-C:H) film shows an ultralow friction coefficient (COF, lower than 0.01); however, its wear life is short in vacuum, and the mechanisms are still not well-understood. This study demonstrates the vacuum tribological behaviors of the a-C:H film can be regulated by interfacial activity. The strong interfacial activity induced continuous transfer of carbon from the film to counterface, causing the formation of a porous transfer film and severe wear of the a-C:H film. Interestingly, weak interfacial activity is beneficial to form spherical-like carbon at the sliding interface, which shields the interaction of dangling bonds and contributes to lower COF and wear of film. Notably, the catalytic nature of Au induced perfect graphene nanoscrolls around Au nanoparticles at the sliding interface, achieving ultralong vacuum wear life. This Letter unifies the understanding of vacuum tribological properties of a-C:H film and provides new insight for prolonging the life of carbon films in vacuum. |
MOST Discipline Catalogue | 工学::材料科学与工程(可授工学、理学学位) |
DOI | 10.1021/acs.jpclett.1c02841 |
Indexed By | SCI |
If | 6.475 |
Language | 英语 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/27462 |
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 | Ji Li; Ma Tianbao; Li Hongxuan |
Affiliation | 1.Key Laboratory of science and technology on wear and protection of materials, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2.Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China 3.State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China 4.Shanghai Aerospace Equipment Manufacture, Shanghai 200245, China |
Recommended Citation GB/T 7714 | Pei Lulu,Chen Weiqi,Ju Pengfei,et al. Regulating Vacuum Tribological Behavior of a-C:H Film by Interfacial Activity[J]. Journal of Physical Chemistry Letters,2021(12):10333-10338. |
APA | Pei Lulu.,Chen Weiqi.,Ju Pengfei.,Zhou Hong.,Xu Zhou.,...&Chen Jianmin.(2021).Regulating Vacuum Tribological Behavior of a-C:H Film by Interfacial Activity.Journal of Physical Chemistry Letters(12),10333-10338. |
MLA | Pei Lulu,et al."Regulating Vacuum Tribological Behavior of a-C:H Film by Interfacial Activity".Journal of Physical Chemistry Letters .12(2021):10333-10338. |
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acs.jpclett.1c02841.(6324KB) | 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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