Influence of the ratio of the anodic and cathodic impulse active times on the properties of the plasma electrolitic coating on the ML5 alloy

Kozlov I.A., Zavarzin S.V., Fomina M.A., Kurshev E.V., Lavrov N.S.
UDC
66.017
DOI
10.18577/2307-6046-2022-0-4-84-95
Article PDF (Russian) (820.93 KB)
How to cite
Kozlov I.A., Zavarzin S.V., Fomina M.A., Kurshev E.V., Lavrov N.S. Influence of the ratio of the anodic and cathodic impulse active times on the properties of the plasma electrolitic coating on the ML5 alloy // Proceedings of VIAM. 2022. No. 4. DOI: 10.18577/2307-6046-2022-0-4-84-95. URL: https://test.viam.ru/en/journal/2022/4/9
Keywords
magnesium alloy, oxidation, plasma electrolytic oxidation, corrosion, protective coatings, microarc oxidation
Abstract

Considers the question of the influence on the structure of the PEO coating of the time ratio of exposure to the polarizing voltage in the anodic and cathodic half-periods during the oxidation process in a silicate-phosphate electrolyte. A linear dependence of the time of cathodic polarization and the thickness of the coating formed on a cast magnesium alloy in a silicate-phosphate electrolyte has been revealed. When using anodic pulses of short duration, the coating has numerous defects in the form of pores, which negatively affects the protective properties.

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