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-----We need to apply "brown gold" deposit
August 26, 2008
hello, I'm Davide Rossi from Italy.
In my company we have a request for brown gold deposit, or in general brown deposit like chocolate colour for fashion industry. Do you know how is possible to obtain it?
I know dark coloured layer obtained with ruthenium deposit but they aren't brown; we have red coloured gold deposit but isn't possible to obtain brown version. Someone speaks about gold silver, but isn't so clear.
Thanks a lot for your help
plating provider - Florence, Italy
First of two simultaneous responses --
Davide,
If your contact was talking a gold - silver alloy, it will not even come close to a brown color. Your best bet is to contact a color gold specialist. Large additions of copper to the gold bath may work but you will run into oxidation and tarnishing problems. A coating on top of the gold may be the only way you can achieve this dark brown color.
process engineer - Malone, New York
August 28, 2008
Second of two simultaneous responses --
Try coloured nickel plating -- the process is somewhat similar to black nickel (according to some books and some expired USA patents blue and green, and many other colours -- try www.uspto.gov webpages, nickel can be possible too). Hope it helps and good luck!
Goran Budija- Cerovski vrh Croatia
August 29, 2008
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