Discoloration of Anodized AA6063 Aluminum Alloy

Discoloration of Anodized AA6063 Aluminum Alloy

The effect of the anodizing process parameters and the influence of β′(Mg2Si) phase on the appearance of the anodized AA6063 aluminum alloy have been investigated. It was found that β′(Mg2Si) phase was preferentially oxidized at low anodizing voltages and the selective oxidation of β′(Mg2Si) phase r...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Journal of the Electrochemical Society 2014-01, Vol.161 (6), p.C312-C320
Hauptverfasser: Ma, Y., Zhou, X., Wang, J., Thompson, G. E., Huang, W., Nilsson, J.-O., Gustavsson, M., Crispin, A.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:The effect of the anodizing process parameters and the influence of β′(Mg2Si) phase on the appearance of the anodized AA6063 aluminum alloy have been investigated. It was found that β′(Mg2Si) phase was preferentially oxidized at low anodizing voltages and the selective oxidation of β′(Mg2Si) phase resulted in the development of a rough alloy/film interface and the incorporation of silicon into the porous anodic film, which led to the discoloration of the anodized alloy.
ISSN:0013-4651
1945-7111
DOI:10.1149/2.065406jes