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Tungsten carbides and W-C phase diagram

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Abstract

The crystal structures of the tungsten monocarbide δ-WC and the disordered lower carbide β-W2C are studied. Using magnetic susceptibility measurements, the hexagonal carbide δ-WC is shown to be stable from 300 to 1200 K. The sequence of phase transformations associated with β-W2C ordering is analyzed. The temperature and composition stability limits of the cubic carbide γ-WC1−x are evaluated, and the first data are presented on the variation of its lattice parameter with composition. An optimized W-C phase diagram is proposed which takes into account detailed structural and phase-equilibrium data for tungsten carbides.

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Authors and Affiliations

  1. Institute of Solid-State Chemistry, Ural Division, Russian Academy of Sciences, Pervomaiskaya ul. 91, Yekaterinburg, 620219, Russia

    A. S. Kurlov & A. I. Gusev

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  1. A. S. Kurlov
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  2. A. I. Gusev
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Original Russian Text © A.S. Kurlov, A.I. Gusev, 2006, published in Neorganicheskie Materialy, 2006, Vol. 42, No. 2, pp. 156–163.

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Kurlov, A.S., Gusev, A.I. Tungsten carbides and W-C phase diagram. Inorg Mater 42, 121–127 (2006). https://doi.org/10.1134/S0020168506020051

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