Study on Evolution of Coating State and Role of Graphene in Graphene-Modified Low-Zinc Waterborne Epoxy Anticorrosion Coating by Electrochemical Impedance Spectroscopy
作者: Rui DingXiao WangJianming JiangTaijiang GuiWeihua Li
作者单位: 1State Key Laboratory of Marine Coatings
2Chinese Academy of Science
刊名: Journal of Materials Engineering and Performance, 2017, Vol.26 (7), pp.3319-3335
来源数据库: Springer Journal
DOI: 10.1007/s11665-017-2790-8
关键词: Anticorrosion mechanismCoatingElectrochemical impedanceGrapheneZinc
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,...
原始语种摘要: 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,...
全文获取路径: Springer  (合作)
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关键词翻译
关键词翻译
  • impedance 阻抗
  • coating 覆盖层
  • anticorrosion 抗腐蚀
  • variation 变异
  • shielding 屏蔽
  • prolonging 延长
  • stage 
  • diffusion 扩散
  • enabled 允许
  • epoxy 环氧尸