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Carbothermic reduction as a potential means for the direct production of Fe-WC and Fe-TaC, NbC metal-matrix composites

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Abstract

The carbothermic reduction of wolframite and columbite ores has been studied as a means of direct production of Fe-WC and Fe-TaC/NbC composite materials. In both cases reduction with graphite at 1600°C produces a good dispersion of carbides in an austenitic iron matrix. Gangue oxide materials appear to separate, largely as a slag phase. Some residual porosity has however been found in the product materials.

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Author notes

  1. D. C. Azubike

    Present address: Alcan International, Banbury, Oxon, UK

  2. A. Chryanthou

    Present address: Department of Materials, University of Nottingham, UK

Authors and Affiliations

  1. Department of Materials, Imperial College, SW7 2BP, London, UK

    B. S. Terry, D. C. Azubike & A. Chryanthou

Authors
  1. B. S. Terry
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  2. D. C. Azubike
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  3. A. Chryanthou
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Terry, B.S., Azubike, D.C. & Chryanthou, A. Carbothermic reduction as a potential means for the direct production of Fe-WC and Fe-TaC, NbC metal-matrix composites. JOURNAL OF MATERIALS SCIENCE 29, 4300–4305 (1994). https://doi.org/10.1007/BF00414214

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  • DOI: https://doi.org/10.1007/BF00414214

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