Cyanide-free electroplating solution for preparing imitation shallow gold zipper, electroplating method of cyanide-free electroplating solution and composite coating

• Main Authors: XIONG ZIREN, LU SHENGGUANG, FENG ZHENGYONG, YANG JUN
• Format: Patent
• Language: Chinese; English
• Published: 03.11.2023
• Subjects: APPARATUS THEREFOR; CHEMISTRY; ELECTROFORMING; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; METALLURGY; PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS

The invention discloses a cyanide-free electroplating solution for preparing an imitation shallow gold zipper, an electroplating method of the cyanide-free electroplating solution and a composite coating. The cyanide-free electroplating solution only takes copper salt and tin salt as main salts, the copper ion concentration is 0.15-0.3 mol/L, and the tin ion concentration is 0.04-0.1 mol/L; potassium pyrophosphate is used as a main complexing agent, and the concentration is 250-350 g/L; the electroplating liquid does not contain gold salt with high price, only copper salt and tin salt are specifically prepared, meanwhile, a plurality of specific complexing agents are supplemented, and then a brightening agent-mercaptoazole organic matter is combined, so that crystal nucleuses formed by the cyanide-free electroplating liquid in the electroplating process are densely distributed, and the electroplating effect is good. The cyanide-free electroplating solution has the advantages of simple composition, strong unif