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Chemical diffusion in transition metal-carbon and transition metal-nitrogen systems

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Book cover The Chemistry of Transition Metal Carbides and Nitrides

Abstract

Phase equilibria and nonmetal diffusivities in Group 5 transition metal carbides and nitrides were investigated by means of diffusion couples. It was found that several corrections with respect to the homogeneity ranges of the phases were necessary. In addition, decomposition temperatures of the ζ phases in the carbide systems were determined. While the nonmetal diffusivities might be concentration dependent even within one phase, and hence are to be regarded as average diffusivities, the activation energies are believed to be correct within the experimental error. The data suggest nonmetal diffusion via vacant octahedral sites in the compounds investigated. Diffusion couple experiments provide both phase equilibria and kinetic data, which are very important for the characterization of refractory carbide and nitride systems.

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Authors and Affiliations

  1. Institute for Chemical Technology of Inorganic Materials, Vienna University of Technology, Getreidemarkt 9/161, A-1060, Vienna, Austria

    W. Lengauer, H. Wiesenberger, M. Joguet, D. Rafaja & P. Ettmayer

Authors
  1. W. Lengauer
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  2. H. Wiesenberger
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  3. M. Joguet
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  4. D. Rafaja
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  5. P. Ettmayer
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Editor information

Editors and Affiliations

  1. Department of Chemical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24061-0211, USA

    S. T. Oyama (Professor) (Professor)

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© 1996 Chapman & Hall

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Lengauer, W., Wiesenberger, H., Joguet, M., Rafaja, D., Ettmayer, P. (1996). Chemical diffusion in transition metal-carbon and transition metal-nitrogen systems. In: Oyama, S.T. (eds) The Chemistry of Transition Metal Carbides and Nitrides. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-1565-7_4

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  • DOI: https://doi.org/10.1007/978-94-009-1565-7_4

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-7199-4

  • Online ISBN: 978-94-009-1565-7

  • eBook Packages: Springer Book Archive

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