Magnetic materials and permanent magnets

Details Magnetic materials and permanent magnets Magnetic materials and permanent magnets

H - Electricity

01

F

75/1, 148/5

H01F 1/053 (2006.01) C22C 1/04 (2006.01) H01F 1/057 (2006.01)

Patent

CA 1315571

- 69 - ABSTRACT MAGNETIC MATERIALS AND PERMANENT MAGNETS Magnetic materials comprising Fe, B, R (rare earth elements) and Co having a major phase of Fe-Co-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, no less than 50 % Co, 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-Co-B-R-M type materials and magnets.

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