Atomistic Understanding on Friction Behavior of Amorphous Carbon Films Induced by Surface Hydrogenated Modification

Title
Atomistic Understanding on Friction Behavior of Amorphous Carbon Films Induced by Surface Hydrogenated Modification
Authors
이광렬리 샤오웨이Aiying Wang
Issue Date
2019-08
Publisher
Tribology international
Citation
VOL 136-454
Abstract
Friction behavior of self-mated amorphous carbon (a-C) films with hydrogenated surface were investigated by reactive molecular dynamics simulation. Results revealed that compared to the hydrogenated a-C (a-C:H) films, hydrogenating the a-C surface only improved the friction property drastically while not deteriorating the intrinsic properties of a-C films. The analysis of interfacial structure demonstrated that being different with a-C:H cases, the competitive relationship between the stress state of H atoms and interfacial passivation caused by H and C-C structural transformation accounted for the evolution of friction coefficient with surface H content. This discloses the friction mechanism of a-C with surface hydrogenated modification and provides an approach to functionalize the carbon-based films with combined tribological and mechanical properties for specific applications.
URI
http://pubs.kist.re.kr/handle/201004/69657
ISSN
0301-679X
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KIST Publication > Article
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