Coating powdered material

Details Coating powdered material Coating powdered material

1980-04-28

1982-07-06

Silverberg, Sam

Coating processes

Electrical product produced

Condenser or capacitor

427 79, 427213, 427214, 427217, 427250, 427252, B05D 512

Patent

active

043383548

ABSTRACT:
A process for coating a particulate insulating material, e.g. alumina, with a uniform layer of a valve metal. The particles are exposed to a gaseous nitrogen compound, or to nitrogen gas together with hydrogen and a volatile halide of the valve metal. It is thought that nitrogen provides nucleation of the surface for subsequent metal deposition. The coated powder may be used in the fabrication of electrolytic capacitor anodes.

REFERENCES:
patent: 3248612 (1966-04-01), Rogers
patent: 3252823 (1966-05-01), Jacobson
patent: 4196233 (1980-04-01), Bitger

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