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Powder Metallurgy and Metal Ceramics

, Volume 48, Issue 11–12, pp 620–626 | Cite as

Effect of gas media on the structural evolution and phase composition of detonation coatings sprayed from mechanically alloyed Ti–Al–B powders

  • V. E. Oliker
  • V. L. Sirovatka
  • T. Ya. Gridasova
  • I. I. Timofeeva
  • E. F. Grechishkin
  • M. S. Yakovleva
  • E. N. Eliseeva
Theory and Technology of Sintering, Thermal and Chemicothermal Treatment

The paper examines the phase formation of detonation coatings sprayed from mechanically alloyed Ti–50 Al–25 B powder. It is shown that coatings with different phase compositions and functional properties can be consolidated from this activated powder by varying process conditions (including gas composition during detonation spraying). Three types of composite coatings with different structures are obtained: TiB and TiB2 inclusions are distributed in an intermetallic matrix (Al3Ti, γ-TiAl); inclusions of oxides and oxynitrides are additionally present in the same structure; inclusions of borides, Al, and Ti are distributed in a mixture of intermetallic and nitride (TiN, AlN) phases.

Keywords

detonation coating Ti–Al–B powder phase formation 

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Copyright information

© Springer Science+Business Media, Inc. 2009

Authors and Affiliations

  • V. E. Oliker
    • 1
  • V. L. Sirovatka
    • 1
  • T. Ya. Gridasova
    • 2
  • I. I. Timofeeva
    • 1
  • E. F. Grechishkin
    • 1
  • M. S. Yakovleva
    • 1
  • E. N. Eliseeva
    • 1
  1. 1.Frantsevich Institute for Problems of Materials ScienceNational Academy of Sciences of UkraineKievUkraine
  2. 2.National Technical University of Ukraine ‘Kiev Polytechnic Institute’KievUkraine

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