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Effect of the deposition parameters on the structure and physicochemical properties of protective Al2O3 coatings

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Abstract

Three series of Al2O3 coating samples are fabricated by microarc oxidation under various deposition conditions and are studied by scanning electron microscopy (SEM) in combination with energy-dispersive x-ray spectroscopy (EDXS), Rutherford backscattering, and X-ray diffraction. Defects and pores in the coatings are analyzed by positron annihilation spectroscopy at room temperature without vacuum. No nanometer pores are detected in the coatings. When changing the electrolyte-plasma oxidation conditions, one can change the concentration and the ratio of the types of vacancy defects in these Al2O3 coatings.

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Authors and Affiliations

  1. Sumy State University, ul. Rimskogo-Korsakova 2, Sumy, 40007, Ukraine

    A. D. Pogrebnyak & A. Sh. Kaverina

  2. Belarussian State University, ul. Leningradskaya 14, Minsk, 220030, Belarus

    F. F. Komarov

  3. Kharkiv Polytechnic University, ul. Frunze 21, Kharkiv, 61002, Ukraine

    O. V. Sobol’

  4. Paton Electric Welding Institute, National Academy of Sciences of Ukraine, ul. Bozhenko 11, Kyiv, 03680, Ukraine

    Yu. N. Tyurin

  5. Kazakh National Pedagogical University, ul. Dostyk 13, Almaty, 050010, Kazakhstan

    A. I. Kupchishin

  6. Eastern-Kazakh State Technical University, ul. Serikbaeva 19, Ust’-Kamenogorsk, 070004, Kazakhstan

    M. K. Kylyshkanov

Authors
  1. A. D. Pogrebnyak
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  2. F. F. Komarov
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  3. A. Sh. Kaverina
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  4. O. V. Sobol’
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  5. Yu. N. Tyurin
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  6. A. I. Kupchishin
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  7. M. K. Kylyshkanov
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Corresponding author

Correspondence to A. D. Pogrebnyak.

Additional information

Original Russian Text © A.D. Pogrebnyak, F.F. Komarov, A.Sh. Kaverina, O.V. Sobol’, Yu.N. Tyurin, A.I. Kupchishin, M.K. Kylyshkanov, 2013, published in Zhurnal Tekhnicheskoi Fiziki, 2013, Vol. 83, No. 11, pp. 142–145.

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Pogrebnyak, A.D., Komarov, F.F., Kaverina, A.S. et al. Effect of the deposition parameters on the structure and physicochemical properties of protective Al2O3 coatings. Tech. Phys. 58, 1688–1691 (2013). https://doi.org/10.1134/S1063784213110200

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  • DOI: https://doi.org/10.1134/S1063784213110200

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