Abstract
In the course of the work it was shown that in the process of short-pulse microarc oxidation, it is possible to control electric parameters – pulse duration and pulse repetition frequency – in a wide range of 12–200 μs and 100–500 Hz, by controlling the porosity and the nature of the surface melting of the MAO coating. As a result, it becomes possible to obtain coating with the required roughness. At the maximum values of the pulse duration and frequency (200 μs and 500 Hz) at the moment of the microplasma discharge, the maximum amount of energy is released, which allows uniformly, with the smallest amount of first irregularities, to melt the coating surface, to obtain round pores of stable size. All that factors favour a decrease in the surface roughness of the MAO coating
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