Inorganic Materials: Applied Research

, Volume 4, Issue 3, pp 256–259 | Cite as

Role of terbium hydride additions in the formation of microstructure and magnetic properties of sintered Nd-Pr-Dy-Fe-B magnets

  • A. A. LukinEmail author
  • N. B. Kol’chugina
  • G. S. Burkhanov
  • N. E. Klyueva
  • K. Skotnitseva
Joining of Materials


Peculiarities of the formation of the high-coercivity state of sintered magnets prepared from a rare-earth-metal-depleted Nd-Pr-Dy-Fe-B composition alloyed with terbium hydride were studied. Terbium hydride additions were shown to increase substantially the magnetization coercive force and to decrease slightly the residual inductance. An inhomogeneous distribution of Nd(Pr) and Tb(Dy) within hard-magnetic Nd2Fe14B phase grains was found; the size of regions of inhomogeneity was 30–150 nm.


coercive force microstructure of permanent magnets Nd2Fe14terbium hydride 


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Copyright information

© Pleiades Publishing, Ltd. 2013

Authors and Affiliations

  • A. A. Lukin
    • 1
    Email author
  • N. B. Kol’chugina
    • 2
  • G. S. Burkhanov
    • 2
  • N. E. Klyueva
    • 2
  • K. Skotnitseva
    • 3
  1. 1.SPA Magnets and Magnetic Systems, Co., Ltd.MoscowRussia
  2. 2.Baikov Institute of Metallurgy and Materials ScienceRussian Academy of SciencesMoscowRussia
  3. 3.Vysoka Skola Banska-Technical University of OstravaOstravaCzech Republic

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