Abstract
It is shown that heating of an internal layer of microarc coating up to temperatures at which insignificant rates of heat removal from microdischarges that possess a temperature of no less than 1200°C are ensured leads to realization of a sufficient time interval for the occurrence of almost 100% transformation of low-temperature aluminum-oxide modifications into high-temperature ones. Insufficient heating of a number of areas of the coating to these temperatures is the main reason for formation of a composite microarc coating that contains both low- and high-temperature aluminum-oxide modifications in its internal layer.
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Original Russian Text © A.G. Rakoch, A.A. Gladkova, V.L. Kovalev, A.G. Seferyan, 2012, published in Korroziya: Materialy, Zashchita, 2012, No. 11, pp. 31–35.
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Rakoch, A.G., Gladkova, A.A., Kovalev, V.L. et al. The mechanism of formation of composite microarc coatings on aluminum alloys. Prot Met Phys Chem Surf 49, 880–884 (2013). https://doi.org/10.1134/S2070205113070125
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DOI: https://doi.org/10.1134/S2070205113070125