Characterization by acoustic emission and electrochemical impedance spectroscopy of the cathodic disbonding of Zn coating

被引：14

作者：

Amami, Souhail ^{[1
]}

Lemaitre, Christian ^{[1
]}

Laksimi, Abdelouahed ^{[1
]}

Benmedakhene, Salim ^{[1
]}

机构：

[1] Univ Technol Compiegne, CNRS, Lab Roberval, Dept Genie Mecan,UMR 6066, F-60206 Compiegne, France

来源：

CORROSION SCIENCE | 2010年 / 52卷 / 05期

关键词：

EIS; 3-PERCENT NACL SOLUTION; ZINC-BASED COATINGS; HYDROGEN PERMEATION; CORROSION BEHAVIOR; CREVICE CORROSION; STEEL; PROTECTION; EIS;

D O I：

10.1016/j.corsci.2010.02.023

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Galvanized steel has been tested in a synthetic sea water solution under different cathodic overprotection conditions. The generated hydrogen flux caused the damage of the metal-zinc interface and led to a progressive coating detachment. Scanning electron microscopy, electrochemical impedance spectroscopy and acoustic emission technique were used to characterize the damage chronology under different cathodic potentials. A damage mechanism was proposed and the acoustic signature related to the coating degradation was statistically identified using clustering techniques. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1705 / 1710

页数：6

共 28 条

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*ASTM INT, D66502 ASTM INT

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