Method for producing gold color coatings

Details Method for producing gold color coatings Method for producing gold color coatings

1980-08-29

1982-06-08

Newsome, John H.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

204177, C23C 1114

Patent

active

043339620

ABSTRACT:
A method of controlling color hues of coatings particularly gold color coatings on substrate using a housing capable of being evacuated, and having an evacuated chamber, a hot cathode chamber in communication with the evacuated chamber and a support structure for the substrate to be coated and a crucible for the material to be evaporated acting as an anode and with a hot cathode in the hot cathode chamber, comprises evaporating the material in the evaporation chamber while maintaining a residual gas atmosphere containing nitrogen therein, producing an electric gas arc discharge between the cathode and the anode of a low voltage, and mixing a carbon containing gaseous compound to the residual gas while applying a negative biasing voltage relative to the housing to the substrate to be coated.

REFERENCES:
patent: 3900592 (1975-08-01), Kennedy et al.
patent: 3953619 (1976-04-01), Matsubara
patent: 4226082 (1980-10-01), Nishida
patent: 4254159 (1981-03-01), Pulker et al.

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