Interaction of interfacial debonding and under-film corrosion propagation at the edge of the blistering area of epoxy coating

被引：3

作者：

Li, Chao ^{[1
,2
]}

Gao, Jin ^{[1
,2
]}

Huang, Yunhua ^{[1
,2
]}

Zhang, Xin ^{[3
]}

Li, Xiaogang ^{[1
,2
]}

机构：

[1] Univ Sci & Technol Beijing, Inst Adv Mat & Technol, Natl Mat Corros & Protect Data Ctr, Beijing 100083, Peoples R China

[2] Univ Sci & Technol, Key Lab Corros & Protect, Minist Educ MOE, Beijing 100083, Peoples R China

[3] Univ Sci & Technol Beijing USTB Co Ltd, Testing Ctr, Beijing 100083, Peoples R China

来源：

JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH | 2023年 / 20卷 / 02期

关键词：

Epoxy coating; LEIS; Blistering; Under-film corrosion; Interfacial debonding; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; ORGANIC COATINGS; PROTECTION; MICROSCOPY; STEEL; DEGRADATION; MECHANISM; BEHAVIOR; SYSTEM;

D O I：

10.1007/s11998-022-00680-4

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The blistering of epoxy coating and its evolution were investigated after being exposed to 3.5 wt% NaCl solution. The evolution of under-film corrosion could be divided into four stages according to the observation of the corrosion morphology and the distribution of corrosion products and elements. Corrosion propagation was related to the distribution of media at the edge of the blistering area. Local electrochemical impedance spectroscopy analysis revealed that local impedance mapping could help in predicting the direction of corrosion propagation. The interfacial debonding at the edge of the blistering area was a necessary condition for corrosion propagation.

引用

页码：457 / 468

页数：12

共 48 条

[1] In-Situ Monitoring of Local Corrosion Process of Scratched Epoxy Coated Carbon Steel in Simulated Pore Solution Containing Varying percentage of Chloride ions by Localized Electrochemical Impedance Spectroscopy [J].