Method for producing rare earth alloy

Details Method for producing rare earth alloy Method for producing rare earth alloy

1986-02-26

1988-09-06

Sheehan, John P.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

148302, 420 83, 420121, C22C 104

Patent

active

047690631

ABSTRACT:
A rare earth alloy for producing permanent magnet comprised of: 15-65 atomic % R.sub.1, 35-83 atomic % Fe, and 0-15 atomic % B, where R.sub.1 represents at least one of heavy rare earth elements Gd, Tb, Dy, Ho, Er, Tm and Yb. This alloy is produced by reducing a mixture of correspoding rare earth oxides, Fe, and a boron containing material by Ca, contacting the reduced mass with water, and treating the resultant slurry with water. Using this alloy, Fe-B-R base magnets wherein R.sub.1 is substituted for part of R (R representing lanthanide and/or Y) having a high performance are produced with a reduced cost.

REFERENCES:
patent: 3748193 (1973-07-01), Cech
patent: 3826696 (1974-07-01), Cech
patent: 3877999 (1975-04-01), Lerman et al.
patent: 3878000 (1975-04-01), McFarland et al.
patent: 3883346 (1975-05-01), Martin
Chemical Abstracts, vol. 104, No. 20, May 19, 1986, p. 266, Abstract No. 172787u, Columbus, Ohio, U.S.
Chemical Abstracts, vol. 102, No. 15, Apr. 22, 1985, p. 248, Abstract No. 135934c, Columbus, Ohio, U.S.
Chemical Abstracts, vol. 99, No. 2, Jul. 11, 1983, p. 220, Abstract No. 9440v, Columbus, Ohio, U.S.

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