Technical Physics

, Volume 58, Issue 11, pp 1688–1691 | Cite as

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

  • A. D. Pogrebnyak
  • F. F. Komarov
  • A. Sh. Kaverina
  • O. V. Sobol’
  • Yu. N. Tyurin
  • A. I. Kupchishin
  • M. K. Kylyshkanov
Short Communications

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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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • A. D. Pogrebnyak
    • 1
  • F. F. Komarov
    • 2
  • A. Sh. Kaverina
    • 1
  • O. V. Sobol’
    • 3
  • Yu. N. Tyurin
    • 4
  • A. I. Kupchishin
    • 5
  • M. K. Kylyshkanov
    • 6
  1. 1.Sumy State UniversitySumyUkraine
  2. 2.Belarussian State UniversityMinskBelarus
  3. 3.Kharkiv Polytechnic UniversityKharkivUkraine
  4. 4.Paton Electric Welding InstituteNational Academy of Sciences of UkraineKyivUkraine
  5. 5.Kazakh National Pedagogical UniversityAlmatyKazakhstan
  6. 6.Eastern-Kazakh State Technical UniversityUst’-KamenogorskKazakhstan

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