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The preparation and characterization of beta-tungsten, a metastable tungsten phase

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Abstract

A metastable phase of tungsten (β-W) is obtained by hydrogen reduction of WO3 at 500°C. Five different samples of WO3 have been used to investigate the effects of oxide surface area and impurity content on the reduction process. The initial oxide samples and the reduction product have been characterized by scanning electron micrographs, and measurements of the oxygen content of β-W have been performed. It is concluded that β-W is not a suboxide as previously reported by Hägg and Schönberg. The effect of other elements on the β-W to α-@#@ W transformation temperature has been investigated.

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Authors and Affiliations

  1. Westinghouse Lamp Divisions, 07003, Bloomfield, N.J.

    W. R. Morcom (Senior Research Engineer) & H. G. Sell (Section Manager)

  2. University of Pennsylvania, 19174, Philadelphia, Pa.

    W. L. Worrell (Associate Professor)

  3. Linde Division, Union Carbide Corporation, 10591, Tarrytown, N.Y.

    H. I. Kaplan (Senior Research Metallurgist)

Authors
  1. W. R. Morcom
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  2. W. L. Worrell
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  3. H. G. Sell
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  4. H. I. Kaplan
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Morcom, W.R., Worrell, W.L., Sell, H.G. et al. The preparation and characterization of beta-tungsten, a metastable tungsten phase. Metall Trans 5, 155–161 (1974). https://doi.org/10.1007/BF02642939

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