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Amounts and character of distribution of impurities in zone-melted single-crystal lanthanum hexaboride

  • Test Methods and Properties of Powder Metallurgical Materials
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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

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Conclusions

In the work described, lanthanum hexaboride single crystals were grown and refined by the levitation zone melting technique with induction heating. The amounts and character of distribution of impurities in the starting and zone-melted materials were determined by quantitative spectral analysis. It is shown that zone melting effectively purifies a starting lanthanum hexaboride powder from many contaminants. The effectiveness of removal of some low-melting-point and volatile elements is increased by their evaporation and escape in the gaseous form from the molten zone. Estimated values of effective coefficients of distribution of many impurities are given.

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Literature cited

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Authors and Affiliations

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

    Yu. B. Paderno, V. I. Lazorenko, N. I. Buryak, A. V. Kovalev, A. A. Matvienko & A. P. Galasun

Authors
  1. Yu. B. Paderno
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  2. V. I. Lazorenko
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  3. N. I. Buryak
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  4. A. V. Kovalev
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  5. A. A. Matvienko
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  6. A. P. Galasun
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 1 (241), pp. 56–60, January, 1983.

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Paderno, Y.B., Lazorenko, V.I., Buryak, N.I. et al. Amounts and character of distribution of impurities in zone-melted single-crystal lanthanum hexaboride. Powder Metall Met Ceram 22, 50–53 (1983). https://doi.org/10.1007/BF00792514

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  • DOI: https://doi.org/10.1007/BF00792514

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