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Anodic oxidation of alloys in the (α-Al–Mg2Si) quasibinary section of the Al–Mg–Si ternary system in 3% NaCl solution and principle of independence of electrochemical reactions

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Powder Metallurgy and Metal Ceramics Aims and scope

The paper studies the kinetics and mechanisms of anodic oxidation of aluminum alloys in the quasibinary section (α-Al–Mg2Si) of the Al–Mg–Si system in a 3% NaCl solution. According to the principle of independence of reactions, the electrochemical processes in two-phase alloys are shown to take place on each phase separately. On some areas of the surface, Al2O3 is formed as a reaction product, while α-SiO2 is formed on the other areas. It is established that the corrosion of the eutectic component occurs at the early oxidation stages, while α-Al dendrites are uniformly dissolved with a dominating transition of Mg2+ ions into the solution. The alloys that have the minimum amount of the eutectic component exhibit the highest corrosion resistance.

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Authors and Affiliations

  1. Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kiev, Ukraine

    V. A. Lavrenko, M. A. Krasovskii & N. P. Korzhova

  2. Kurdyumov Institute for Metal Physics, National Academy of Sciences of Ukraine, Kiev, Ukraine

    T. N. Legkaya

Authors
  1. V. A. Lavrenko
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  2. M. A. Krasovskii
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  3. N. P. Korzhova
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  4. T. N. Legkaya
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Corresponding author

Correspondence to V. A. Lavrenko.

Additional information

Translated from Poroshkovaya Metallurgiya, Vol. 50, No. 9–10 (481), pp. 102–110, 2011.

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Lavrenko, V.A., Krasovskii, M.A., Korzhova, N.P. et al. Anodic oxidation of alloys in the (α-Al–Mg2Si) quasibinary section of the Al–Mg–Si ternary system in 3% NaCl solution and principle of independence of electrochemical reactions. Powder Metall Met Ceram 50, 655–661 (2012). https://doi.org/10.1007/s11106-012-9371-z

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  • DOI: https://doi.org/10.1007/s11106-012-9371-z

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