The anodic behavior of binary mg-al alloys in koh-aluminate solutions

The anodic behavior of pure Mg, binary Mg-Al alloys (2 at.%, 5 at.% and 8 at.% of Al) and intermetallic Mg 17Al 12 was studied in a solution containing 3 M KOH+0.6 M KF+0.21 M Na 3PO 4, with and without addition of 0.4 M and 1.1 M of aluminate. Constant voltage polarization revealed primary and seco...

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Bibliographic Details
Published inCorrosion science Vol. 40; no. 7; pp. 1149 - 1160
Main Authors Khaselev, O, Yahalom, J
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.07.1998
Elsevier Science
Subjects
A binary MG–Al alloys
Applied sciences
C anodizing
Corrosion
Corrosion environments
Exact sciences and technology
KOH aluminate solutions
Metals. Metallurgy
KOH aluminate solutions
A binary MG–Al alloys
C anodizing
Magnesium base alloys
Electrochemical corrosion
Potassium Hydroxides
Anodizing
Intermetallic compound
Aluminates
Aluminium alloy
Magnesium
Binary alloy
Passivation
Passivity breakdown
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Summary:The anodic behavior of pure Mg, binary Mg-Al alloys (2 at.%, 5 at.% and 8 at.% of Al) and intermetallic Mg 17Al 12 was studied in a solution containing 3 M KOH+0.6 M KF+0.21 M Na 3PO 4, with and without addition of 0.4 M and 1.1 M of aluminate. Constant voltage polarization revealed primary and secondary passivity of Mg and Mg-Al alloys. At a constant applied current, the voltage increases linearly with time until it reaches values of breakdown. The breakdown voltage increases with the Al content in the alloy and the aluminate concentration in the solution.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0010-938X
1879-0496
DOI:10.1016/S0010-938X(98)00019-5