Magnetic materials

Details Magnetic materials Magnetic materials

1992-04-30

1993-03-16

Yee, Deborah

Metal treatment

Stock

Magnetic

420 83, 420121, C22C 3805

Patent

active

051940981

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, 2028 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: 4601875 (1986-07-01), Yamamoto et al.
patent: 4770723 (1988-09-01), Sagawa et al.
patent: 4773950 (1988-09-01), Fujimura et al.
patent: 4840684 (1989-06-01), Fujimura

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