申请人:——
公开号:US20020002128A1
公开(公告)日:2002-01-03
This invention relates to solutions of dithionic acid and/or dithionate salts for use in metal finishing processes such as those used for the cleaning, activating, electroplating, electroless plating, conversion coating and/or other pre-treatment or post-treatment of a metallic surface. In particular the solutions are a useful electrolyte for the electroplating of metallic coatings, especially, Sn, Cu, Ni, Zn and precious metals, onto metal or plastic substrates and/or other surfaces.
本发明涉及用于金属表面处理的二硫酸和/或二硫酸盐溶液,例如用于清洁、活化、电镀、无电镀、转化涂层和/或其他前处理或后处理金属表面的处理过程。特别地,这些溶液是一种有用的电解质,可用于在金属或塑料基板和/或其他表面上电镀金属涂层,特别是Sn、Cu、Ni、Zn和贵金属。