Materials Science

, Volume 42, Issue 5, pp 644–648 | Cite as

Structure of an alloy based on SmCo5 after disproportionation-recombination

  • I. I. Bulyk
  • A. M. Trostyanchyn


By using the X-ray phase diffraction, metallographic, and micro-X-ray spectral analyses, we study the procedure of solid hydrogenation, disproportionation, desorption, and recombination in KS37 alloy formed by the SmCo5 and SmCo3 phases for \(P_{H_2 } \) ≈ 4 MPa at 1158°K. The alloy disproportionates in hydrogen into a mixture of samarium hydride and cobalt with grain sizes ≤ 1 µm. The process of recombination ends by the restoration of the original phases accompanied by the formation of a fine-grained structure of the SmCo3 phase. As a result, the amount of this phase decreases. The procedure of holding of the alloy for 55 min in the course of recombination leads to the formation of a structure with elongated grains.


Disproportionation Samarium Solid Hydrogenation Karpenko Physicomechanical Institute Original Alloy 
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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • I. I. Bulyk
    • 1
  • A. M. Trostyanchyn
    • 1
  1. 1.Karpenko Physicomechanical InstituteUkrainian Academy of SciencesLviv

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