Journal
SURFACE & COATINGS TECHNOLOGY
Volume 206, Issue 6, Pages 1085-1090Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.surfcoat.2011.07.072
Keywords
Plasma-anodizing; Simultaneous process; Al/Mg compound; Process parameters; Microstructure; Coating thickness
Funding
- DFG [SFB 692]
- Gabriele Tauchmann and Annemarie Hartung
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A process for the simultaneous plasma-electrolytic anodic oxidation (PAO) of a compound consisting of an Al (AIMgSi1) and Mg (AZ31) alloy is introduced. Using this process, an almost uniformly thick, compact oxide coating on both compound partners can be produced provided that the narrow window of this process is determined and kept. The most important parameters for the simultaneous plasma anodizing are the composition and conductivity of the used electrolyte, the current density and the process time. A short-time process using high current densities has been found suitable. This process is a promising procedure for the protection of Al- and Mg-based compound surfaces. (C) 2011 Elsevier B.V. All rights reserved.
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