Method of increasing the coercive force of pulverized rare earth

Details Method of increasing the coercive force of pulverized rare earth Method of increasing the coercive force of pulverized rare earth

1971-02-18

1977-12-20

Satterfield, Walter R.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148 3157, 148103, 148108, 427130, 428403, 428900, H01F 102

Patent

active

040639711

ABSTRACT:
The coercive force of pulverized selected rare earth-cobalt alloys is increased or maintained at least at its initial value by depositing tin on the surface of the alloy particles and subjecting the particles to a heat treatment so as to cause diffusion of the tin into the particle structure.
Permanent magnets formed from tin enriched rare earth-cobalt alloy particles are also disclosed.

REFERENCES:
patent: 2974104 (1961-03-01), Paine et al.
patent: 3523836 (1970-08-01), Buschow et al.
patent: 3591428 (1971-07-01), Buschow et al.
patent: 3615914 (1971-10-01), Becker

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