Gold plating solution

摘要

A gold plating bath and a plating method is disclosed where gold cyanide or salts thereof provide the source of gold, a cobalt compound, and a reaction product of compound containing at least a nitrogen-containing heterocyclic compound and an epihalohydrin. The gold plating bath has high deposition selectivity.

主权项

1. A gold cobalt alloy plating solution consisting of a gold cyanide or salt thereof, a cobalt compound, a conductive salt, water, a reaction product of a compound containing a nitrogen-containing heterocyclic compound, an epihalohydrin and an alkylene oxide, and optionally additives chosen from a chelating agent, and a pH adjusting agent.