Hard magnetic materials

Details Hard magnetic materials Hard magnetic materials

1977-10-07

1978-10-24

Rutledge, L. Dewayne

Metal treatment

Compositions

Heat treating

148101, H01F 104

Patent

active

041219520

ABSTRACT:
Fine-grained sintered magnetic material having the composition expressed by SmMz where M is essentially cobalt or a combination of cobalt, iron and copper, exhibits a large coercive force critically when the z-value is in the vicinity of 8. As small amount of zinc can be added to the raw material to aid in the sintering of the material.

REFERENCES:
patent: 3947295 (1976-03-01), Tawara et al.
patent: 3982971 (1976-09-01), Yamanaka et al.
Perry et al., "Magnetic Properties of R(Co.sub.1-y Cu.sub.y).sub.z Compds", Cobalt & Cobalt Abstracts, Jun. 1975, p. A27.
Senno et al., "Magnetic Properties of Sm-Co-Fe-Cu Alloys . . .", Jap. J. Appl. Phys., 14, (1975), 1619.
Tawara et al., "Bulk Hardened Magnet . . . Rare Earth-Cobalt", Jap. J. Appl. Phys., 12, (1975), 761.

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