Materials Science

, Volume 48, Issue 3, pp 316–322 | Cite as

Influence of the time of interaction of an alloy based on SmCo5 with low-pressure hydrogen on the phase composition

  • I. І. Bulyk
  • А. M. Trostyanchyn
  • P. Ya. Lyutyi

By the methods of differential thermal analysis and X-ray phase analysis, we have investigated the interaction of an alloy based on SmCO5 with additives of the SmCO3 phase under initial hydrogen pressures of 0.3, 0.4, 0.5, and 0.6 МРа at temperatures of 713 and 913 K with holding for 2 and 5 h. At 713 K, only the compound SmCO3 interacts with hydrogen with the formation of unidentified phases. In holding at 913 K under a pressure of 0.3 and 0.4 МРа for τ = 2 and 5 h, the alloy partially disproportionates into samarium hydride and cobalt. It has been established that the complete disproportionation occurs in holding at pressures of 0.5 and 0.6 МРа and for τ = 2 and 5 h. In vacuum, at 1223 K, disproportionation products recombine in the initial phases.


Sm–Co ferromagnetic alloys hydrogenation disproportionation desorption recombination phase transformations 


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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • I. І. Bulyk
    • 1
  • А. M. Trostyanchyn
    • 1
  • P. Ya. Lyutyi
    • 1
  1. 1.Karpenko Physicomechanical InstituteUkrainian National Academy of SciencesLvivUkraine

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