Influence of the form of the polarizing impulses on structure and protective properties PEO coating formed on alloy ML5

Kozlov I.A., Vinogradov S.S., Kulyushina N.V.
UDC
669.721.5:620.197.5
DOI
10.18577/2307-6046-2017-0-8-12-12
Article PDF (Russian) (792.88 KB)
How to cite
Kozlov I.A., Vinogradov S.S., Kulyushina N.V. Influence of the form of the polarizing impulses on structure and protective properties PEO coating formed on alloy ML5 // Proceedings of VIAM. 2017. No. 8. DOI: 10.18577/2307-6046-2017-0-8-12-12. URL: https://test.viam.ru/en/journal/2017/8/12
Keywords
microarc oxidation, plasma electrolytic oxidation, anodic oxidation, anode oxide coatings, magnesium alloys.
Abstract

Magnesium alloys have good specific mechanical and technological properties and represent high interest for the aviation industry. Today the issue of corrosion protection of magnesium alloys is not resolved. In work use question plasma electrolytic an oxidation (PEO) for protection of magnesium alloys is considered. Are compared structure and PEO properties of the coating created in silicate electrolit solution at various duration of polarizing impulses. The received results were confirmed power efficiency of short impulses with a squared duration of 2•10-4 over sinusoidal impulses lasting 2•10-2. Short impulses were increased microhardness and kept protective properties of PEO coating.

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