Journal
PLASMA PROCESSES AND POLYMERS
Volume 6, Issue -, Pages S671-S677Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ppap.200931708
Keywords
corrosion; magnesium; plasma; polishing; PVD; surface preparation
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Within the presented study, the economic potential of PVD-coatings for the surface refinement and protection of Mg-alloys is fully examined. The research includes the introduction of new pre-treatment methods by plasma and chemical polishing, followed by corrosion-inhibiting PVD-coating based on TiMgAlN and thin decorative PVD-finish-film consisting of Nb. Anodic oxidation of the PVD-finish film guarantees the full colour palette by interference effects. It will be shown that chemical and plasma polishing can be applied for the surface pretreatment of magnesium alloys. The TiMgAlN coated magnesium alloys withstand the 96 h salt spray test without any significant corrosion damage.
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