公开(公告)号：EP2649223A2

公开(公告)日：2013-10-16

申请号：EP11799631.4

申请日：2011-12-07

申请人： COVENTYA S.p.A.

发明人： ROSSI, Davide ,  FALLETTA, Ester ,  SCHMIDBAUR, Hubert ,  DUPRAT, Jean-Jaques

IPC分类号： C25D3/62

CPC分类号： C25D3/62

摘要： The present invention relates to cyanide-free electrolytes for the electrochemical deposition of binary and polynary alloys of gold, which contain an alkaline solution of anionic thiolate complexes of gold and metals which form alloys with gold. These electrolytes can be produced in a simple, environmentally friendly and economical way from commercially available aqueous solutions of sulphite complexes of gold and a number of salts of the corresponding alloy-forming metals, by addition of the thiols and setting of an alkaline pH of the electrolytic bath. The electrolytes display long-term stability and can be used for the electrochemical deposition of gold alloys. The present invention likewise relates to a process for producing the electrolytes mentioned.

摘要翻译： 本发明涉及不含氰化物的电解液为二元合金和金的多元，其在黄金和金属，其形成有金合金阴离子硫醇盐配合物的碱性溶液含有的电化学沉积。 这些电解质可在从亚硫酸金络合物和多个相应的合金形成的金属的盐的可商购的wässrige解决方案的简单，环境友好且经济的方式来制备，通过加入的碱性pH的硫醇和设置 电解槽。 电解质显示长期稳定性和可用于金的合金的电化学沉积。 本发明同样涉及一种用于生产所述的电解质。