Film formation in the second step of micro-arc oxidation on magnesium alloys

被引：90
|
作者：
Zhang, R. F. [1 ,2 ]
机构：
[1] Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Surface Engn, Nanchang 330013, Jiangxi, Peoples R China
[2] Jiangxi Sci & Technol Normal Univ, Sch Mat Sci & Engn, Nanchang 330013, Jiangxi, Peoples R China
来源：
CORROSION SCIENCE | 2010年 / 52卷 / 04期
关键词：
Magnesium; SEM; Anodic films; Oxide coatings; ANODIC FILMS; MG ALLOY; CONTAINING ELECTROLYTES; CORROSION PROTECTION; CONTINUOUS SPARKING; VALVE METALS; PHYTIC ACID; COATINGS; BREAKDOWN; SILICATE;
D O I：
10.1016/j.corsci.2009.12.025
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnesium alloys were anodized firstly in a neutral solution and then in an alkaline solution by micro-arc oxidation (MAO). The second step of MAO was a competition between old film dissolution and new film formation. The curves of voltage and mass gain with time showed that in the initial stage, the old film was dissolved. Surface morphologies and EDX analyses indicated that a new film was formed after 1 min. The transition from the process dominated by old film dissolution to that by new film formation took place when the new film had completely covered the old film. (C) 2010 Elsevier Ltd. All rights reserved.
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页码：1285 / 1290
页数：6
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