Coloring a gold alloy

Details Coloring a gold alloy Coloring a gold alloy

1991-07-02

1992-11-17

Dean, R.

Metal treatment

Stock

Noble metal base

420512, C22C 502, C21D 144

Patent

active

051640260

ABSTRACT:
A gold alloy comprises at least gold, iron and nickel, the gold being present in an amount between about 74.4 and 94.5 percent by weight of the alloy, the iron being present in an amount between about 5.0 and 25.0 percent by weight of the alloy, and the nickel being present in an amount between about 0.5 to about 0.6 percent by weight of the alloy. Heat treatment of the alloy causes a visually observable blue coloration.

REFERENCES:
patent: 660983 (1900-10-01), Conner et al.
patent: 1580443 (1926-04-01), Shields
patent: 2576738 (1951-11-01), Williams
patent: 4820487 (1989-04-01), Antoniazzi

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