Study on Evolution of Coating State and Role of Graphene in Graphene-Modified Low-Zinc Waterborne Epoxy Anticorrosion Coating by Electrochemical Impedance Spectroscopy

doi:10.1007/s11665-017-2790-8

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	Study on Evolution of Coating State and Role of Graphene in Graphene-Modified Low-Zinc Waterborne Epoxy Anticorrosion Coating by Electrochemical Impedance Spectroscopy
	Ding, Rui 1,2; Wang, Xiao 1; Jiang, Jianming 1; Gui, Taijiang 1; Li, Weihua 2
刊名	JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
	2017-07-01
卷号	26 期号:7 页码:3319-3335
关键词	Anticorrosion Mechanism Coating Electrochemical Impedance Graphene Zinc
DOI	10.1007/s11665-017-2790-8
文献子类	Article
英文摘要	In this paper, corrosion potential and impedance response of the graphene-modified low-zinc waterborne epoxy anticorrosion coating with different compositions were measured experimentally. Microstructure impedance analysis approach was proposed, which was applied to analyze in detail the system impedance and to clarify the variation of coating state as well as the role of graphene in the coating. Results showed that the variation course of coating state was divided into four stages: activation stage; cathodic protection stage; shielding protection stage; and failure stage. Graphene formed numerous isolation layers in the coating to hinder the diffusion of aggressive particles like water and oxygen as well as corrosion products, which played a certain shielding protective role. Moreover, graphene was a good electron conductor, which enabled the outer layer zinc to continue to constitute a galvanic couple with the iron substrate after cathodic protection stage, thereby prolonging the protective effect of the coating to some extent.
语种	英语
WOS记录号	WOS:000405659200031
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.qdio.ac.cn/handle/337002/137069]
专题	海洋研究所_海洋腐蚀与防护研究发展中心
作者单位	1.Marine Chem Res Inst, State Key Lab Marine Coatings, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Ding, Rui,Wang, Xiao,Jiang, Jianming,et al. Study on Evolution of Coating State and Role of Graphene in Graphene-Modified Low-Zinc Waterborne Epoxy Anticorrosion Coating by Electrochemical Impedance Spectroscopy[J]. JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,2017,26(7):3319-3335.
APA	Ding, Rui,Wang, Xiao,Jiang, Jianming,Gui, Taijiang,&Li, Weihua.(2017).Study on Evolution of Coating State and Role of Graphene in Graphene-Modified Low-Zinc Waterborne Epoxy Anticorrosion Coating by Electrochemical Impedance Spectroscopy.JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE,26(7),3319-3335.
MLA	Ding, Rui,et al."Study on Evolution of Coating State and Role of Graphene in Graphene-Modified Low-Zinc Waterborne Epoxy Anticorrosion Coating by Electrochemical Impedance Spectroscopy".JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE 26.7(2017):3319-3335.