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Effect of production conditions on the corrosion resistance of lanthanum hexaboride powders and parts made from them

  • Yu. B. Paderno
  • A. V. Tkach
  • E. M. Dudnik
  • T. V. Masyuk
  • Z. A. Zaitseva
Test Methods and Properties of Powder Metallurgical Materials
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Conclusions

It has been established that hydrochloric acid treatment is an effective means of ridding an industrial lanthanum hexaboride powder of impurities. It is shown that acid treatment of industrial LaB6 powders substantially improves the corrosion resistance of parts made from them by powder metallurgy techniques. A mechanism of rupture of hot-pressed and sintered lanthanum hexaboride parts is proposed.

Keywords

Hydrochloric Acid Corrosion Resistance Lanthanum Powder Metallurgy Acid Treatment 
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Literature cited

  1. 1.
    Yu. B. Paderno, E. M. Dudnik, Z. A. Zaitseva, et al., “Disintegration of sintered parts made from lanthanum hexaboride powder of technical purity,” Poroshk. Metall., No. 4, 56–60 (1981).Google Scholar
  2. 2.
    V. V. Morozov, V. L. Shlyuko, A. I. Goncharuk, and P. I. Loboda, “Preparation of lanthanum hexaboride single crystals,” Elektron. Tekh., Ser. 6, Mater., No. 2, 15–18 (1982).Google Scholar
  3. 3.
    M. Futamoto, M. Nakasawa, and K. Usami, “Thermoionic emission properties of a single crystal LaB6 cathode,” J. Appl. Phys.,51, No. 7, 3869–3876 (1980).Google Scholar

Copyright information

© Plenum Publishing Corporation 1985

Authors and Affiliations

  • Yu. B. Paderno
    • 1
  • A. V. Tkach
    • 1
  • E. M. Dudnik
    • 1
  • T. V. Masyuk
    • 1
  • Z. A. Zaitseva
    • 1
  1. 1.Institute of Materials ScienceAcademy of Sciences of the Ukrainian SSRUkraine

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