Metal Science and Heat Treatment

, Volume 60, Issue 7–8, pp 489–493 | Cite as

Reversible Changes of Coercive Force in Sm – Co – Cu – Fe – Zr Alloy for Permanent Magnets Under Cyclic Heat Treatment

  • A. S. LileevEmail author
  • V. V. Pinkas
  • K. V. Voronchikhina
  • A. V. Gunbin

Causes of reversible changes in the coercivity of alloys for permanent magnets as a result of cyclic heat treatment are analyzed. The magnetic properties and the metallographic and magnetic domain structures of alloy Sm(Co0.65Fe0.26Cu0.07Zr0.02)7 are studied as a function of the temperature of interruption of the process cooling. The own results and data of foreign authors are used for developing a scheme of the processes occurring in the alloy in order to explain the mechanism of the “damage – restoration” phenomenon in alloys of the Sm – Co – Cu – Fe – Zr system of type Sm(Co0.65Fe0.26Cu0.07Zr0.02)7.

Key words

permanent magnets heat treatment phase composition heat treatment temperature magnetic properties coercivity “damage,” “restoration” 


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • A. S. Lileev
    • 1
    Email author
  • V. V. Pinkas
    • 1
  • K. V. Voronchikhina
    • 2
  • A. V. Gunbin
    • 1
  1. 1.National Research Technological University “MISiS”MoscowRussia
  2. 2.“Spetsmagnit” CompanyMoscowRussia

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