Fe-Cr-Co Permanent magnet alloy and alloy processing

Details Fe-Cr-Co Permanent magnet alloy and alloy processing Fe-Cr-Co Permanent magnet alloy and alloy processing

1979-11-09

1981-03-03

Rutledge, L. Dewayne

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148108, 148 3157, H01F 102

Patent

active

042538831

ABSTRACT:
Fine-grained Fe-Cr-Co magnetic alloys are disclosed which have desirable magnetic properties such as, in particular, a coercive force in the range of 300-600 Oersted, a remanence in the range of 8000-13000 Gauss, and a maximum energy product in the range of 1-6 MGOe. Disclosed alloys consist essentially of 25-29 weight percent Cr, 7-12 weight percent Co, and remainder iron; processing of disclosed alloys may typically include low-temperature solution annealing, cold shaping, and an aging heat treatment. Disclosed magnetic alloys may be used, e.g., in the manufacture of ringers, relays, and electro-acoustic transducers.

REFERENCES:
patent: 3806336 (1974-04-01), Kaneko et al.
patent: 3954519 (1976-05-01), Inoue
patent: 3982972 (1976-09-01), Iwata et al.
patent: 3989556 (1976-11-01), Iwata et al.
patent: 4075437 (1978-02-01), Chin et al.
patent: 4120704 (1978-10-01), Anderson

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