NIMTE OpenIR  > 2018专题
Exploring the low friction of diamond-like carbon films in carbon dioxide atmosphere by experiments and first-principles calculations
Huo, Lei; Wang, Shunhua; Pu, Jibin; Sun, Junhui; Lu, Zhibin; Ju, Pengfei; Wang, Liping
2018
发表期刊APPLIED SURFACE SCIENCE
卷号436页码:893-899
摘要The friction behavior and the mechanism of DLC films in CO2 atmosphere are rarely explored, which is a significant obstacle for the potential practical application of DLC films in primarily CO2 environment. Here, the experiments and first-principles calculations are performed to simultaneously investigate this theme. We find that DLC films in CO2 atmosphere exhibit astoundingly low friction coefficient compared with in ambient air and vacuum atmospheres. The XPS and Raman spectrums demonstrate the possibly activation of CO2 molecule in the shearing interfaces, which may be critical for the low friction of DLC films in CO2 atmosphere. The calculated results reveal that the lactone groups can easily form during the horizontally chemisorption of CO2 molecule on the DLC surface, which is energetic and is a favorable process under the interfacial stress. Because of the presence of the lone-pairs of the lactone group, the lactone-terminated surfaces appear to be responsible for the low friction of DLC films in CO2 atmosphere. The studies may open up the possibility for DLC films usage in Mars applications. (C) 2017 Elsevier B.V. All rights reserved.
关键词Oxygen Hydrogen Behavior
学科领域Chemistry ; Materials Science ; Physics
语种英语
文献类型期刊论文
条目标识符http://ir.nimte.ac.cn/handle/174433/16732
专题2018专题
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GB/T 7714
Huo, Lei,Wang, Shunhua,Pu, Jibin,et al. Exploring the low friction of diamond-like carbon films in carbon dioxide atmosphere by experiments and first-principles calculations[J]. APPLIED SURFACE SCIENCE,2018,436:893-899.
APA Huo, Lei.,Wang, Shunhua.,Pu, Jibin.,Sun, Junhui.,Lu, Zhibin.,...&Wang, Liping.(2018).Exploring the low friction of diamond-like carbon films in carbon dioxide atmosphere by experiments and first-principles calculations.APPLIED SURFACE SCIENCE,436,893-899.
MLA Huo, Lei,et al."Exploring the low friction of diamond-like carbon films in carbon dioxide atmosphere by experiments and first-principles calculations".APPLIED SURFACE SCIENCE 436(2018):893-899.
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