Evaluation of Technological Capability to from Dielectric Coatings on AK6 Alloy, Using a Method of Microarc Oxidation
- Авторы: Gutsalenko Y.G.1, Sevidova E.K.1, Stepanova I.I.1
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Учреждения:
- National Technical University Kharkiv Polytechnical Institute
- Выпуск: Том 55, № 5 (2019)
- Страницы: 602-606
- Раздел: Article
- URL: https://journals.rcsi.science/1068-3755/article/view/231354
- DOI: https://doi.org/10.3103/S1068375519050041
- ID: 231354
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Аннотация
The dielectric properties of coatings on AK6 alloy formed with a microarc oxidation method in two electric modes in alkaline-silicate electrolytes are estimated. It is shown that both modes, a galvanostatic mode and an arbitrarily falling power mode in alternating current circuits, make it possible to obtain coatings with a thickness of 30–60 μm, with sufficiently high electrophysical parameters: bulk specific resistance ρv = 3–9 × 109 Ω m and dielectric strength E = 9–14 V/μm. It is established that higher values of ρv and E in the both modes can be achieved in the solutions of 1 g/L KOH + 6 g/L of liquid glass (LG) and 12 g/L of LG. In terms of absolute value, the parameters of the coatings formed in the mode of arbitrarily falling power exceed the same characteristics of the oxide layers formed under conditions of galvanostatic mode by a factor of 1.5–2.5.
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Об авторах
Yu. Gutsalenko
National Technical University Kharkiv Polytechnical Institute
Email: grinko@kpi.kharkov.ua
Украина, Kharkiv, 61002
E. Sevidova
National Technical University Kharkiv Polytechnical Institute
Автор, ответственный за переписку.
Email: grinko@kpi.kharkov.ua
Украина, Kharkiv, 61002
I. Stepanova
National Technical University Kharkiv Polytechnical Institute
Email: grinko@kpi.kharkov.ua
Украина, Kharkiv, 61002
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