Coating Formation on Ti-6Al-4V Alloy by Micro Arc Oxidation in Molten Salt.
作者： Alexander Sobolev , Israel Wolicki , Alexey Kossenko , Michael Zinigrad , Konstantin Borodianskiy
DOI: 10.3390/MA11091611
关键词:
摘要: Micro Arc Oxidation (MAO) is an electrochemical surface treatment process to produce oxide protective coatings on some metals. MAO usually conducted in aqueous electrolyte, which requires intensive bath cooling and leads the formation of a coating containing impurities that originate electrolyte. In current work, we applied alternative ceramic Ti-6Al-4V alloy using molten nitrate salt at temperature 280 °C. The obtained morphology, chemical phase composition, corrosion resistance were investigated described. results showed 2.5 µm was formed after 10 min treatment, titanium titanium‒aluminum intermetallic phases. Morphological examination indicated free cracks contains round, homogeneously distributed pores. Corrosion testing Ti 20 times more resistive than untreated alloy.
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