Multi-layer process for cobalt treatment of ferromagnetic oxides

Details Multi-layer process for cobalt treatment of ferromagnetic oxides Multi-layer process for cobalt treatment of ferromagnetic oxides

1984-06-08

1987-05-12

Pianalto, Bernard D.

Coating processes

Magnetic base or coating

Magnetic coating

427131, 427132, B05D 512

Patent

active

046649476

ABSTRACT:
Coercivity of ferromagnetic particles is increased by depositing multiple layrs containing transition metals, including cobalt, on the surface of the particles at ambient temperature. Thereafter, the particles are heated sufficiently to obtain the desired level of coercivity. Typically, total heating time is five to ten hours.

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