Structure and properties of plasma electrolytic oxide coating formed on aluminum alloy of Al–Cu–Mg–Li system

Fomina M.A., Kozlov I.A., Kutyrev A.E.
UDC
629.7.023
DOI
10.18577/2307-6046-2020-0-45-70-79
Article PDF (Russian) (828.66 KB)
How to cite
Fomina M.A., Kozlov I.A., Kutyrev A.E. Structure and properties of plasma electrolytic oxide coating formed on aluminum alloy of Al–Cu–Mg–Li system // Proceedings of VIAM. 2020. No. 4-5. DOI: 10.18577/2307-6046-2020-0-45-70-79. URL: https://test.viam.ru/en/journal/2020/4-5/8
Keywords
aluminum alloys, conversion coatings, oxidation, coatings, plasma electrolytic oxidation, microhardness of the coating, mechanism of coating growth.
Abstract

In work researches of the plasma electrolytic oxide covering formed with application of silicate and phosphatic electrolit on samples of a sheet semi-finished product from aluminum – a lithium alloy 1441-Т1 are conducted. It is established that thickness of a covering has linear dependence on time in the range from 30 till 165 min. The analysis of a chemical composition and the mechanism of formation of a plasma electrolytic covering is carried out. Research of structure of a covering allowed to establish dependence of properties (microhardness, breakdown resistance) from porosity and other internal defects.

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