Rare earth-iron-boron compositions for polymer-bonded magnets

Details Rare earth-iron-boron compositions for polymer-bonded magnets Rare earth-iron-boron compositions for polymer-bonded magnets

1989-05-26

1991-04-02

Dean, R.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

148105, 419 12, 419 20, H01F 1053

Patent

active

050044990

ABSTRACT:
Permanent magnets are prepared by a method comprising mixing a particulate rare earth-iron-boron alloy with a particulate additive metal powder, compacting the aligned mixture to form a shape, and heating the compacted shape at a temperature at least 150.degree. C. less than the sintering temperature of a rare earth-iron-boron alloy and usually in the range from about 700.degree. C. to less than 850.degree. C.

REFERENCES:
patent: 4747874 (1988-05-01), Ghandehari
patent: 4826546 (1989-05-01), Yamamoto et al.
patent: 4840684 (1989-06-01), Fujimura et al.
patent: 4844751 (1989-07-01), Schultz

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