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Preparation of tungsten tetraboride

  • Theory, Production Technology, and Properties of Powders and Fibers
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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    A study was made of the conditions of preparation and temperature range of stability of the tungsten boride WB4. It was established that WB4 forms already at 1650°C and remains in the structure right up to its melting point (2200°C) [3].

  2. 2.

    It is shown that tungsten tetraboride forms only in the presence of excess boron in the charge. Charges with M∶B ratios varying from 1∶4.5 to 1∶12 yield a boride of composition WB4, which crystallizes in the hexagonal system with the space group D 46h −P63/mmc.

  3. 3.

    The microhardness of tungsten tetraboride was measured and found to be 4000±200 kg/mm2-a value close to that reported by Lundström.

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Literature cited

  1. K. I. Portnoi, V. M. Romashov, et al., Poroshkovaya Met., No. 5 (1967).

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  3. T. Lundström, Arkiv Kemi,30, 115 (1968).

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  4. F. Galasso and A. Paton, Trans. Met. Soc. A.I.M.E.,236, 1750 (1966).

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Authors and Affiliations

  1. Institute of Materials Science, Academy of Sciences of the Ukrainian SSR, Ukraine

    L. G. Bodrova, M. S. Koval'chenko & T. I. Serebryakova

Authors
  1. L. G. Bodrova
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  2. M. S. Koval'chenko
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  3. T. I. Serebryakova
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 1 (133), pp. 1–4, January, 1974.

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Bodrova, L.G., Koval'chenko, M.S. & Serebryakova, T.I. Preparation of tungsten tetraboride. Powder Metall Met Ceram 13, 1–3 (1974). https://doi.org/10.1007/BF00790675

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  • DOI: https://doi.org/10.1007/BF00790675

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