Structure and composition of anodic films formed on binary Mg-Al alloys in KOH-aluminate solutions under continuous sparking

被引：185

作者：

Khaselev, O

Weiss, D

Yahalom, J

机构：

[1] Technion Israel Inst Technol, Dept Mat Engn, IL-32000 Haifa, Israel

[2] Dead Sea Works Ltd, IL-84100 Beer Sheva, Israel

来源：

CORROSION SCIENCE | 2001年 / 43卷 / 07期

关键词：

Mg-Al alloys; anodizing; sparking; MgAl2O4;

D O I：

10.1016/S0010-938X(00)00116-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Anodizing of binary Mg-Al alloys (2-12% at Al) and intermetallic Mg17Al12 was studied in a solution containing 3 M KOH 0.6 M KF + 0.21 M Na3PO4, with and without addition of 0.4 M and 1.1 M aluminate. The anodic films were formed under continuous breakdown and anodizing was accompanied by intensive sparking and oxygen evolution. The films formed on Mg-Al alloys in a bath containing 1.1 M aluminate were composed of MgAl2O4 spinel and that on intermetallic Mg17Al2 Of gamma -Al2O3 and MgAl2O4. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：1295 / 1307

页数：13

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