Elation electroplating bath sn-bi and electroplating method using it.

摘要

A galvanizing bath ALLOY SN-BI comprising at least one selected from the group consisting of POLIOXIMONOCARBOXILICOS acids, lactones polyethylene oxide polycarboxylic acids and salts thereof COMPOUND. Galvanizing A method comprising the step of applying a film galvanization Sn-Bi to a substrate in said bath. The galvanizing bath permits the formation of a film galvanization SN ALLOY HAVING A BI-bismuth content ranging between 0.1 and 75% ALONG A WIDE RANGE OF CURRENT DENSITY. Moreover, the galvanizing bath NEVER HASTY, NON becomes cloudy, does not cause any change in the composition BATH AND IS, THEREFORE, EVEN IF FAIRLY STABLE IN A LONG STORED period.