Magnetic materials and permanent magnets

Details Magnetic materials and permanent magnets Magnetic materials and permanent magnets

1992-04-30

1993-02-02

Yee, Deborah

Metal treatment

Stock

Magnetic

420 83, 420121, C22C 3800

Patent

active

051835169

ABSTRACT:
Magnetic materials comprising Fe, B and R (rare earth elements) having a major phase of an Fe-B-R intermetallic compound which may be a tetragonal system, wherein at least 50 at % of R consists of Nd and/or Pr, and anisotropic sintered permanent magnets consisting essentially of 8-30 at % R, 2-28 at %, B and the balance being Fe with impurities. These magnetic materials and permanent magnets may contain additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf), thus providing Fe-B-R-M type materials and magnets.

REFERENCES:
patent: 4721538 (1988-01-01), Narashimhan et al.

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