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
Source PublicationAPPLIED SURFACE SCIENCE
Volume436Pages:893-899
AbstractThe 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.
KeywordOxygen Hydrogen Behavior
Subject AreaChemistry ; Materials Science ; Physics
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/16732
Collection2018专题
Recommended Citation
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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