Atomistic understanding on friction behavior of amorphous carbon films induced by surface hydrogenated modification

被引：35
作者：
Li, Xiaowei [1 ,2 ]
Wang, Aiying [2 ]
Lee, Kwang-Ryeol [1 ]
机构：
[1] Korea Inst Sci & Technol, Computat Sci Ctr, Seoul 136791, South Korea
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Zhejiang, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2019年 / 136卷
基金：
新加坡国家研究基金会; 中国国家自然科学基金;
关键词：
Amorphous carbon; Hydrogenated surface modification; friction property; Reactive molecular dynamics; DIAMOND-LIKE CARBON; CHEMICAL MOLECULAR-DYNAMICS; GRAPHITIZATION; MECHANISM; WEAR; DEPENDENCE; COATINGS;
D O I：
10.1016/j.triboint.2019.04.019
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
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.
引用
收藏
页码：446 / 454
页数：9
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