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Investigation of the sintering conditions of parts made of lanthanum hexaboride

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

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Summary

  1. 1.

    A study was made of the conditions of preparation of lanthanum hexaboride parts by the method of vacuum sintering of precompacted blanks.

  2. 2.

    It was established that, during the sintering of lanthanum hexaboride compacts in a packing material composed of the same compound, the packing material partially decomposes, as a result of which the boron and Lanthanum are transported through the gaseous phase into the compact pores and fill them with lanthanum hexaboride forming from the gaseous phase; because of this, it is possible under certain conditions to produce lanthanum hexaboride specimens with densities of up to 99.2%.

  3. 3.

    The best packing material composition is 30% LaB6 in the form of granules and 70% of the same compound in the form of powder. This composition secures adequate transport of lanthanum hexaboride through the gaseous phase and prevents the packing material from sticking to specimens during sintering.

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Literature cited

  1. G. V. Samsonov, Refractory Compounds of the Rare-Earth Metals with Nonmetals [in Russian], Izd. Metallurgiya, Moscow (1964).

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  2. S. P. Gordienko, G. V. Samsonov, and V. V. Fesenko, Poroshkovaya Metallurgiya, No. 8, 70 (1965).

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  3. V. M. Sleptsov, E. M. Prshedromirskaya, and Yu. P. Kukota, Poroshkovaya Metallurgiya, No. 9, 11 (1965).

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Authors and Affiliations

  1. Kiev Engineering Institute, USSR

    V. Ya. Shlyuko & L. V. Chernyak

Authors
  1. V. Ya. Shlyuko
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  2. L. V. Chernyak
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 12, pp. 41–45, December, 1967.

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Shlyuko, V.Y., Chernyak, L.V. Investigation of the sintering conditions of parts made of lanthanum hexaboride. Powder Metall Met Ceram 6, 969–972 (1967). https://doi.org/10.1007/BF00779960

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  • DOI: https://doi.org/10.1007/BF00779960

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