Metal treatment – Stock – Magnetic
Patent
1987-02-10
1988-09-13
Sheehan, John P.
Metal treatment
Stock
Magnetic
420 83, 420121, 75251, 75244, 75245, 75246, H01F 104
Patent
active
047707232
ABSTRACT:
Magnetic materials comprising Fe, B and R (rare earth elements) having a major phase of Fe--B--R intermetallic compound(s) of tetragonal system, and sintered anisotropic permanent magnets consisting essentially of, by atomic percent, 8-30% R (at least one of rare earth elements inclusive of Y), 2-28% B and the balance being Fe with impurities. Those may contain additional elements M (Ti, Ni, Bi, V, Nb, Ta, Cr, Mo, W, Mn, Al, Sb, Ge, Sn, Zr, Hf) providing Fe--B--R--M type materials and magnets.
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Fujimura Setsuo
Matsuura Yutaka
Sagawa Masato
Sheehan John P.
Sumitomo Special Metals Co. Ltd.
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