| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a copper-zinc alloy electroplating bath in which a cyan compound is not contained and from which a plated film having excellent corrosion resistance is formed, and to provide a wire for a steel cord. <P>SOLUTION: The copper-zinc alloy electroplating bath contains copper salt, zinc salt, alkali metal pyrophosphate and at least one selected from amino acids and the salts thereof and has≤5% volumetric molar concentration ratio (A/M) (wherein A is the volumetric molar concentration of the amino acid or the salt thereof; and M is the total volumetric molar concentration of the copper ions and zinc ions contained in the copper-zinc alloy electroplating bath). <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
