Electrochemical impedance spectroscopy analysis on aluminum alloys in EXCO solution

被引：34
作者：
Cao, FH
Zhang, Z
Su, JX
Zhang, JQ
机构：
[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China
[2] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect Met, Shenyang 110016, Peoples R China
来源：
MATERIALS AND CORROSION-WERKSTOFFE UND KORROSION | 2005年 / 56卷 / 05期
关键词：
D O I：
10.1002/maco.200403844
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Electrochemical impedance spectroscopy (EIS) of Al-Zn-Mg-Cu alloy in EXCO solution has been investigated. The results show that the impedance spectroscopy of the investigated electrode consists of two capacitive loops in the high and middle frequency domain respectively and an inductive loop in the low frequency domain at the first 30 h of immersion; the inductive arc disappears between 30 h and 60 h while it takes on at the low frequency domain at the last 36 h of the immersion time. A model based on the corrosion mechanism of the aluminum alloy and corroding morphology was proposed and applied to analyze the EIS results.
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页码：318 / 324
页数：7
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