Rare earth magnet alloys with excellent hot workability

Details Rare earth magnet alloys with excellent hot workability Rare earth magnet alloys with excellent hot workability

1991-03-25

1992-07-14

Sheehan, John P.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148104, 419 12, H01F 102

Patent

active

051299631

ABSTRACT:
The ability to hot work RE-Fe-B type compositions to form anisotropic magnets containing Nd.sub.2 Fe.sub.14 B.sub.1 -type crystal grains is improved by the addition of suitable, small amounts of one or more of cerium, lanthanum or yttrium. The improvement in hot working is seen in the reduction of cracks in the deformed body and in the ability to reduce the hot working temperature without a significant penalty in magnetic properties.

REFERENCES:
patent: 4765848 (1988-08-01), Mohri et al.
patent: 4801340 (1989-01-01), Inoue et al.
patent: 4895607 (1990-01-01), Yang et al.

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