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Journal of Materials Science

, Volume 30, Issue 3, pp 607–614 | Cite as

Vapour-phase reduction and the synthesis of boron-based ceramic phases

Part I The phase equilibria in the B-C-N-O system
  • S. J. Yoon
  • A. Jha
Papers

Abstract

Thermodynamic calculations have been performed to establish the partial pressure relationships between the gaseous species BO and CO at an isotherm during the reduction-nitridation of boric anhydride. This relationship enables us to establish the condition for the formation of boron nitride ceramic phase by selecting a suitable nitriding atmosphere. Relevant Gibbs free-energy equations have also been considered for establishing the phase equilibrium relationships over a wide range of temperature in the B-C-N-O system. The importance of BO gas formation and its subsequent reduction to BN is also discussed.

Keywords

Boron Nitride Partial Pressure Anhydride Phase Equilibrium 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1995

Authors and Affiliations

  • S. J. Yoon
    • 1
  • A. Jha
    • 1
  1. 1.Department of Materials TechnologyBrunel UniversityUxbridgeUK

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