C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/32
C22C 28/00 (2006.01) B22F 9/20 (2006.01) C22C 30/00 (2006.01) H01F 1/053 (2006.01)
Patent
CA 1287507
ABSTRACT A rare earth alloy for producing permanent magnet comprised of 15-65 atomic % R1, 35-83 atomic % Fe, and 0-15 atomic % B, where R1 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 corresponding 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 R1 is substituted for part of R (R representing lanthanide and/or Y) having a high performance are produced with a reduced cost.
503303
Fujimura Setsuo
Hamada Takaki
Ishigaki Naoyuki
Kirby Eades Gale Baker
Sumitomo Special Metals Co. Ltd.
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