Process of producing ferromagnetic materials

Details Process of producing ferromagnetic materials Process of producing ferromagnetic materials

1975-12-01

1977-04-05

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25C 500

Patent

active

040160572

ABSTRACT:
Ferromagnetic particles having a high squareness ratio, high coercivities, and stable magnetic properties are prepared by electrolyzing ferromagnetic particles in an aqueous electrolyte using a cathode carrying ferromagnetic particles. The ferromagnetic particles thus treated may be then subjected to a heat treatment, if desired. When the ferromagnetic particles are iron oxide particles, the aqueous electrolyte contains a compound of a transition element.

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