Thin films containing metallic copper and silver by replacement

Details Thin films containing metallic copper and silver by replacement Thin films containing metallic copper and silver by replacement

1975-04-17

1976-11-23

Weiffenbach, Cameron K.

Stock material or miscellaneous articles

Composite

Of quartz or glass

29195, 427169, 427305, 427306, 427404, 428434, 428458, B32B 1504, B32B 1508, B05D 136

Patent

active

039938450

ABSTRACT:
Novel copper-silver metallic films are prepared on transparent articles by chemical replacement of silver for copper according to the method of the present invention. A transparent article is coated with a metallic copper film by a conventional method of deposition. The copper coated article is then contacted by a solution comprising a silver salt, ammonia and a complexing agent which promotes replacement but which does not accelerate the oxidation of residual metallic copper in the film. Replacement of copper by silver occurs with the film retaining its reflective metallic character.

REFERENCES:
patent: 3457138 (1969-07-01), Miller
patent: 3476530 (1969-11-01), Ehrreich et al.
patent: 3772056 (1973-11-01), Polichette et al.
patent: 3920864 (1975-11-01), Greenburg et al.

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