Materials Research (Sep 2007)

Magnetic properties of Pr-Fe-Co-B bonded HDDR magnets with alloying additions

  • Eguiberto Galego,
  • Hidetoshi Takiishi,
  • Rubens Nunes de Faria Jr.

DOI
https://doi.org/10.1590/S1516-14392007000300010
Journal volume & issue
Vol. 10, no. 3
pp. 273 – 277

Abstract

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Microstructures and magnetic properties of Pr-Fe-Co-B bonded magnets were investigated. The magnets can be represented by the formulae, Pr14Fe63.9Co16B6M 0.1 (M = Ti, V, Cr, Ni, Zr, Nb or Mo), Pr14Fe63.8Co16B6Nb 0.1T0.1 (T/= Al, Si, P, Cu or Ga) and Pr14Fe63.6Co16B6Nb 0.1R0.3 (R = Gd, Tb or Dy). The effects of additions on the magnetic properties of PrFeCoB-based magnets have been studied. Magnetically hard powders have been produced from homogenised alloys using the hydrogenation, disproportionation, desorption and recombination (HDDR) process. The HDDR powders were isostatically pressed and bonded with cyanoacrylate adhesive to form permanent magnets.

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