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Structure and Thermophysical Properties of Oxide Layer Formed by Microarc Oxidation on AK12D Al – Si Alloy

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Metal Science and Heat Treatment Aims and scope

The characteristics of the oxide layer deposited by microarc oxidation (MAO) on Al – Si alloys in a silicate-alkaline electrolyte are studied. The thermal conductivity of the layer at 50 – 120°C is determined using a special facility by the method of stationary heat flow. The thickness, the porosity, the elemental composition, the content of the amorphous phase, and the size of the crystallites in the oxide layer are determined. The results obtained are analyzed and the conditions for the lowest thermal conductivity of the oxide layer are determined.

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The work has been performed within Agreement No. 14.574.21.0161 of 26.09.2017 with support of the Ministry of Education and Science of the Russian Federation (the unique identifier of the project is RFMEF157417X0161).

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Authors and Affiliations

  1. Ufa State Aircraft Engineering University, Ufa, Russia

    N. Yu. Dudareva & R. F. Gallyamova

  2. Tolyatti State University, Tolyatti, Russia

    P. V. Ivashin, A. Ya. Tverdokhlebov & M. M. Krishtal

Authors
  1. N. Yu. Dudareva
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  2. P. V. Ivashin
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  3. R. F. Gallyamova
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  4. A. Ya. Tverdokhlebov
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  5. M. M. Krishtal
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Correspondence to N. Yu. Dudareva.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 44 – 52, November, 2020.

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Dudareva, N.Y., Ivashin, P.V., Gallyamova, R.F. et al. Structure and Thermophysical Properties of Oxide Layer Formed by Microarc Oxidation on AK12D Al – Si Alloy. Met Sci Heat Treat 62, 701–708 (2021). https://doi.org/10.1007/s11041-021-00625-5

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  • DOI: https://doi.org/10.1007/s11041-021-00625-5

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