Conclusions
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1.
The more remote the process of hydrogen reduction of tungsten and molybdenum from equilibrium and the more unstable the intermediate phases, the greater is the self-acceleration of the reduction process resulting from particle comminution.
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2.
The hypothesis is advanced thatβ-W is a granulometric rather than a temperature modification of tungsten, which means that the existence ofβ-W directly depends on the particle size of the material.
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A. V. Savin, Poroshkovaya Met., No. 9 (1968).
A. V. Savin, N. D. Smirnov, and L. S. Vodop'yanova, Poroshkovaya Met., No. 7 (1971).
A. Hegedus, T. Millner, et al., Z. Anorg. Allgem. Chem.,281, No. 1–2, 64 (1955).
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Published to stimulate discussion.
Deceased.
Translated from Poroshkovaya Metallurgiya, No. 7(151), pp. 6–10, July, 1975.
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Chizhikov, D.M., Savin, A.V., Safonov, V.I. et al. Reduction of tungsten and molybdenum oxides. Powder Metall Met Ceram 14, 521–524 (1975). https://doi.org/10.1007/BF00810983
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DOI: https://doi.org/10.1007/BF00810983