Formation and transformation of Mg(OH)2 in anodic coating using FTIR mapping

被引：42

作者：

Chang, Linrong ^{[1
]}

Cao, Fahe ^{[1
]}

Cai, Jingshun ^{[1
]}

Liu, Wenjuan ^{[1
]}

Zhang, Jianqing ^{[1
,2
]}

Cao, Chunan ^{[1
,2
]}

机构：

[1] Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2009年 / 11卷 / 11期

关键词：

FTIR; Microscopic mapping; Mg(OH)(2); Anodic coating; AZ91D MAGNESIUM ALLOY; ELECTROCHEMICAL-BEHAVIOR; CORROSION-RESISTANCE; MG ALLOY; FILMS;

D O I：

10.1016/j.elecom.2009.09.042

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

070208 [无线电物理];

摘要：

FTIR microscopic mapping was used to investigate the surface distribution of Mg(OH)(2) on anodic coatings. The results indicated Mg(OH)(2) was formed accompanying with micro-arc sparking and the amount of Mg(OH)(2) was related to the intensity of sparking, which depends on the applied voltage. The distribution and amount of Mg(OH)(2) varied with immersion time in 3.5 wt.% NaCl solution. The transformation process of anodic coatings was researched by FTIR microscopic mapping and smart map. The Cl- could be absorbed on the surface of anodic coatings where Mg(CH)(2) is present and promote Mg(OH)(2) to transform into the soluble magnesium salt MgCL2. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：2245 / 2248

页数：4

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