Method of making a magnetic powder

Details Method of making a magnetic powder Method of making a magnetic powder

1977-11-07

1980-07-29

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

148105, H01F 102

Patent

active

042148936

ABSTRACT:
A method is provided for making a magnetic powder composed principally of cobalt from a mixture solution containing metal salts, such as cobalt salt, and the like, catalysts, such as palladium chloride, and the like, and reducing agents, such as sodium hypophosphite, and the like. Protein, such as albumin or hemoglobin, is added to the mixture solution to promote dispersion of cobalt particles therein. The magnetic powder thus obtained is suitable for use in the production of audio and video tapes.

REFERENCES:
patent: 3943012 (1976-03-01), Tamai et al.
patent: 3966510 (1976-06-01), Aonuma et al.
Harada et al., IEEE Transactions, Sep. 1972, pp. 468-470.

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