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Preparation of ultrafine tungsten carbide powder by CVD method from WCl6–C2H2–H2 mixtures

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Abstract

The synthesis of ultrafine tungsten carbide powder from WCl6–C2H2-H2 mixtures was investigated. Under most experimental conditions, a mixture of α–WC and β–W2C was produced. The specific surface area and morphology of the product prepared under various reaction conditions were determined. The product particle size increased with temperature up to 1373 K and then decreased, went through a minimum with increasing WCl6 partial pressure, and decreased with increasing H2 flow rate. The specific surface area of the product showed the opposite trend in all cases.

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Authors and Affiliations

  1. Rapidly Solidified Materials Research Center and the Department of Metallurgical Engineering, Chungnam National University, Daejeon, 305-764, Korea

    Chang-Whan Won & Byong-Sun Chun

  2. Department of Metallurgical Engineering, University of Utah, Salt Lake City, Utah, 84112-1183, USA

    H. Y. Sohn

Authors
  1. Chang-Whan Won
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  2. Byong-Sun Chun
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  3. H. Y. Sohn
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Won, CW., Chun, BS. & Sohn, H.Y. Preparation of ultrafine tungsten carbide powder by CVD method from WCl6–C2H2–H2 mixtures. Journal of Materials Research 8, 2702–2708 (1993). https://doi.org/10.1557/JMR.1993.2702

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  • DOI: https://doi.org/10.1557/JMR.1993.2702

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