| 摘要 |
PURPOSE: A method of obtaining yellow gold alloy deposition by galvanoplasty without toxic metal is provided to ensure the high luster of deposition and high resistance to abrasion and discoloration and to remove toxic metal or metalloid. CONSTITUTION: A method of obtaining yellow gold alloy deposition by galvanoplasty without toxic metal is as follows. Mirror-bright yellow gold alloy is deposited on an electrode in a bath. The bath contains alkaline aurocyanide gold metal, an organic metal compound, wetting agent, sequestering agent, free cyanide, double-copper kalium cyanide, silver cyanide. The bath contains gold of 9.08%, cupper of 90.85%, and silver of 0.07%. The bath does not contain cadmium and zinc.
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