Method of making magnetic precursor for permanent magnets

Details Method of making magnetic precursor for permanent magnets Method of making magnetic precursor for permanent magnets

1997-04-29

1998-06-16

Yee, Deborah

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148302, C02C 3800

Patent

active

057663726

ABSTRACT:
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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Kuzma, Yu B., "The Interaction of Transistion and Rare Earth Metal With Boron", Journal of the Less Common Metals, 67(1979), pp. 51-57.

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