Oxide layers formed on AK6M2 aluminum-silicon alloy by microarc oxidizing (MO) are studied. The chemical and phase compositions and the morphology of the layers deposited from a base-composition electrolyte with different contents of added SiO2 powder are determined. It is shown that high-temperature phases form in the oxide layer at a specific concentration of SiO2 nanoparticles. This indicates elevation of the effective temperature in the zone of synthesis of the oxide layers in the process of MO. The addition of nanosize particles of SiO2 into the electrolyte influences positively the operating characteristics of the formed oxide layer.
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The work has been performed with support of State Research Engineering Assignment (Project 887).
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 7, pp. 62 – 69, July, 2015.
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Krishtal, M.M., Ivashin, P.V., Yasnikov, I.S. et al. Effect of Nanosize SiO2 Particles Added into Electrolyte on the Composition and Morphology of Oxide Layers Formed in Alloy AK6M2 Under Microarc Oxidizing. Met Sci Heat Treat 57, 428–435 (2015). https://doi.org/10.1007/s11041-015-9900-8
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DOI: https://doi.org/10.1007/s11041-015-9900-8