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Особенности процесса микродугового оксидирования алюминиевых сплавов при работе с типовыми промышленными источниками питания

Особенности процесса микродугового оксидирования алюминиевых сплавов при работе с типовыми промышленными источниками питания

Abstract

В данной статье исследованы особенности проведения процесса микродугового оксидирования при использовании конденсаторного и тиристорного источников питания. Проводится анализ динамики образования оксидного покрытия на алюминиевом сплаве Д16 при работе с конденсаторным источником питания. С помощью высокоскоростной видеосъемки установлено, что при работе с конденсаторным источником питания время горения микродуговых разрядов на поверхности образцов значительно меньше полного времени процесса оксидирования. Плавное начало горения и угасания разрядов на поверхности образцов связано с синусоидальной формой электрического тока источника питания. Изменение плотности электрического тока влияет на интенсивность образования оксидного покрытия на поверхности образцов. Повышение плотности тока при микродуговом оксидировании значительно увеличивает толщину оксидного покрытия, однако при этом количество дефектов в нем также растет.

In this article characteristics of the micro-arc oxidation process with standard capacitor and thyristor power sources are present. The formation of oxide coating on aluminum alloy samples D16 in working with capacitor power source is analyzed. The advantages and disadvantages of this process are listed. The using of high-speed video revealed that with a capacitor power supply burning time microarc discharges on the sample surface is much smaller than the total time of oxidation process. Smooth start and fading of discharges on the surface of the samples is due to the sinusoidal electric current source. The change of electric current density affects the rate on the formation of oxide coating on the sample surface. Increasing current density microarc oxidation increases the thickness of the oxide coating, but the number of defects therein is also increasing.

Keywords

ПЛОТНОСТЬ ТОКА, ОКСИДНОЕ ПОКРЫТИЕ, КОНДЕНСАТОРНЫЙ ИСТОЧНИК ПИТАНИЯ, АЛЮМИНИЕВЫЙ СПЛАВ Д16, АЛЮМИНИЙ, МИКРОДУГОВОЕ ОКСИДИРОВАНИЕ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
gold