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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, Rui1,2; Wang, Xiao1; Jiang, Jianming1; Gui, Taijiang1; Li, Weihua2
2017-07-01
发表期刊JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
卷号26期号:7页码:3319-3335
文章类型Article
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.
关键词Anticorrosion Mechanism Coating Electrochemical Impedance Graphene Zinc
DOI10.1007/s11665-017-2790-8
收录类别SCI
语种英语
WOS记录号WOS:000405659200031
引用统计
文献类型期刊论文
版本出版稿
条目标识符http://ir.qdio.ac.cn/handle/337002/137069
专题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
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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.
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