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Powder Metallurgy and Metal Ceramics

, Volume 46, Issue 1–2, pp 8–11 | Cite as

Combustion synthesis of α-Si3N4-(MgO, Y2O3) composites

  • V. V. Zakorzhevskii
  • I. P. Borovinskaya
  • L. A. Chevykalova
  • I. Ya. Kelina
Article

Abstract

The possibility of obtaining composite powders of α-Si3N4-Y2O3 and α-Si3N4-MgO by self-propagating high-temperature synthesis (SHS) is studied. It is established that the α → β phase transformation starts at temperatures lower than the melting points of the corresponding eutectics. Metastable composite powders based on α-Si3N4 with a high rate of phase transition are obtained. The composite powders (α-Si3N4-Y2O3, α-Si3N4-MgO) are used in hot pressing technology.

Keywords

silicon nitride composite synthesis combustion ceramics 

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Copyright information

© Springer Science+Business Media, Inc. 2007

Authors and Affiliations

  • V. V. Zakorzhevskii
    • 1
  • I. P. Borovinskaya
    • 1
  • L. A. Chevykalova
    • 1
  • I. Ya. Kelina
    • 1
  1. 1.Institute of Structural Macrokinetics and Materials ScienceRussian Academy of SciencesChernogolovkaRussia

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