Permanent magnet and process for producing the same

Details Permanent magnet and process for producing the same Permanent magnet and process for producing the same

1976-07-08

1977-09-13

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

75 84, 75152, 148103, 252 6257, H01F 102, C22C 2300

Patent

active

040479820

ABSTRACT:
The brittle nature and magnetic properties of the rare earth cobalt magnet are improved by the simultaneous addition of Cu and V. Cu and V are included in amounts of from 0.5 to 6% by weight and from 7 to 19% by weight, respectively. The simultaneous addition enables the rear earth cobalt magnet to be cast in the form of an article. In addition, the simultaneous addition not only improves the mechanical properties of the sintered article, in which form the conventional magnet was available, but also the magnetic properties, such that, for example, the coercive force is increased when the molar ratio of cobalt with respect to rear earth elements is great.

REFERENCES:
patent: 3326637 (1967-06-01), Holtzberg et al.
patent: 3947295 (1976-03-01), Tawara et al.
patent: 3982971 (1976-09-01), Yamanaka et al.
Senno, H. et al., Perm. Mag. Prop. of Sm-Ce-Co-Fe-Cu Alloys, in IEE Trans, 10, June 1974, pp. 313-317.
Nesbitt, E., New Perm. Mag. Materials, in Journ. Appl. Phys. 40, Mar. 1969, pp. 1259-1265.
Tawara, Y. et al., Bulk Hardened Magnet, in Journ. Appl. Phys. 12, June 1973, pp. 761-762.

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