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Formation and study of electrospark coatings based on titanium aluminides

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Abstract

Coatings containing Ti-Al intermetallics are fabricated by the electrospark deposition of titanium on aluminum and aluminum on titanium. The microstructure and composition of the grown coatings is studied by scanning electron microscopy, X-ray diffraction, and S-ray microanalysis. It is found that the surface layer formed in argon mostly contains the α-TiAl3 intermetallic independent of the duration and frequency of discharge pulses. The γ-TiAl and α2-Ti3Al phases can be obtained by aluminum deposition on titanium followed by the subsequent deposition of a second titanium layer. Aluminum oxide and titanium nitride are additionally formed during the deposition of electrospark coatings in air.

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Authors and Affiliations

  1. Institute for Materials Science, Khabarovsk Scientific Center, Far East Branch, Russian Academy of Sciences, ul. Tikhookeanskaya 153, Khabarovsk, 680042, Russia

    S. A. Pyachin & A. A. Burkov

  2. Kosygin Institute of Tectonics and Geophysics, Far East Branch, Russian Academy of Sciences, ul. Kim Yu Chen 65, Khabarovsk, 680000, Russia

    V. S. Komarova

Authors
  1. S. A. Pyachin
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  2. A. A. Burkov
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  3. V. S. Komarova
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Original Russian Text © S.A. Pyachin, A.A. Burkov, V.S. Komarova, 2013, published in Poverkhnost’. Rentgenovskie, Sinkhrotronnye i Neitronnye Issledovaniya, 2013, No. 6, pp. 16–24.

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Pyachin, S.A., Burkov, A.A. & Komarova, V.S. Formation and study of electrospark coatings based on titanium aluminides. J. Surf. Investig. 7, 515–522 (2013). https://doi.org/10.1134/S1027451013030336

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  • DOI: https://doi.org/10.1134/S1027451013030336

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