Barrier mechanism of multilayers graphene coated copper against atomic oxygen irradiation

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	Barrier mechanism of multilayers graphene coated copper against atomic oxygen irradiation
	Xue, Qunji; Pu, Jibin; Ren, Siming; Zhang, Haijing
刊名	APPLIED SURFACE SCIENCE
	2018
卷号	444 页码:28-35
关键词	Low-earth-orbit Chemical-vapor-deposition High-quality Space Films Coatings Supercapacitors Temperature Oxidation Corrosion
英文摘要	Graphene has been demonstrated as a protective coating for Cu under ambient condition because of its high impermeability and light-weight oxidation barrier. However, it lacks the research of graphene as a protective coating in space environment. Here, we experimentally and theoretically study the oxidation behavior of graphene-coated Cu in vacuum atomic oxygen (AO) condition. After AO irradiation, the experimental results show multilayer graphene has better anti-oxidation than monolayer graphene. Meanwhile, the calculation results show the oxidation appeared on the graphene's grain boundaries or the film's vacancy defects for the monolayer graphene coated Cu foil. Moreover, the calculation results show the oxidation process proceeds slowly in multilayers because of the matched defects overlaps each other to form a steric hindrance to suppress the O atom diffusion in the vertical direction, and the mismatched defects generates potential energy barriers for interlayer to suppress the O atom diffusion in the horizontal direction. Hence, multilayer graphene films could serve as protection coatings to prevent diffusion of O atom. (C) 2018 Elsevier B.V. All rights reserved.
学科主题	Science & Technology - Other Topics ; Materials Science
语种	英语
公开日期	2018-12-04
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/17370]
专题	2018专题
推荐引用方式 GB/T 7714	Xue, Qunji,Pu, Jibin,Ren, Siming,et al. Barrier mechanism of multilayers graphene coated copper against atomic oxygen irradiation[J]. APPLIED SURFACE SCIENCE,2018,444:28-35.
APA	Xue, Qunji,Pu, Jibin,Ren, Siming,&Zhang, Haijing.(2018).Barrier mechanism of multilayers graphene coated copper against atomic oxygen irradiation.APPLIED SURFACE SCIENCE,444,28-35.
MLA	Xue, Qunji,et al."Barrier mechanism of multilayers graphene coated copper against atomic oxygen irradiation".APPLIED SURFACE SCIENCE 444(2018):28-35.