PRETREATING SOLUTION FOR SILVER PLATING

摘要

PURPOSE:To prevent the substitution deposition of silver and to form a fine silver film when a substrate of a metal which is baser than silver is electroplated with silver, by pretreating the substrate with a soln. contg. rhodanine. CONSTITUTION:This pretreating soln. for silver plating is an aqueous soln. contg. rhodanine. A substrate of a metal which is baser than silver such as a copper (alloy) substrate or a copper plated substrate is dipped in the pretreating soln. before the surface of the substrate is electroplated with silver. The substitution deposition of silver is prevented, and a fine silver film is formed by electroplating.