Effect of environmental hydrogen atoms on the tribological behaviors of diamond-like carbon films

被引：44

作者：

Bai, Lichun ^{[1
]}

Srikanth, Narasimalu ^{[1
]}

Wu, Hong ^{[2
]}

Liu, Feng ^{[2
]}

Liu, Bo ^{[3
]}

Zhou, Kun ^{[3
]}

机构：

[1] Nanyang Technol Univ, Interdisciplinary Grad Sch, 50 Nanyang Ave, Singapore 639798, Singapore

[2] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Hunan, Peoples R China

[3] Nanyang Technol Univ, Sch Mech & Aerosp Engn, 50 Nanyang Ave, Singapore 639798, Singapore

来源：

TRIBOLOGY INTERNATIONAL | 2016年 / 99卷

关键词：

Diamond-like carbon; Superlow friction; Hydrogen environment; SUPERLOW FRICTION; DLC FILMS; SUPERLUBRICITY; TRIBOCHEMISTRY; COATINGS; ADHESION; SURFACE; WEAR;

D O I：

10.1016/j.triboint.2016.03.037

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Influence of environmental H atoms on, the tribological behaviors of DLC films is investigated via molecular dynamics simulations. These H atoms significantly reduce the friction force, and the reduction mechanisms depend on friction temperatures. At low friction temperatures, the H atoms are concentrated near contact interfaces, and their passivations highly reduce the interfacial adhesion, resulting in the low friction force. However, high friction temperatures induce the significant diffusion of the H atoms into the DLC films and thermally expand such films and increase their graphitization, causing a wide region with easy-shear properties to reduce the friction force. It is believed that these mechanisms of friction reduction can improve the understanding of the superlow friction of DLC films in H-2 environment. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：258 / 266

页数：9

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