Method for the surface treatment of a metal by atmospheric press

Details Method for the surface treatment of a metal by atmospheric press Method for the surface treatment of a metal by atmospheric press

1993-03-15

1995-01-24

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Plasma

B05D 306

Patent

active

053841670

ABSTRACT:
This invention provides a method for the surface treatment of a metal, which comprises the steps of: placing at least a surface to be treated of a metal to be treated between two electrodes facing each other under an atmosphere of a mixed gas consisting of an inert gas and a reactant gas; and plasma exciting said mixed gas under atmospheric pressure to effect glow discharge between said electrodes. The method of the present invention uses an apparatus simpler than that used in a conventional method and can inject into the surface layer of a metal, even those elements which have been difficult to with the conventional method, and can readily modify surface properties of a metal such as surface hardness, surface wettability, etc.

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