Process for preparing Zn-Ni-alloy-electroplated steel sheets with excellent adherence of the plated layer

摘要

The adhesion of a corrosion resisting Zn-Ni-alloy plated layer on a steel sheet is improved by pre-plating the steel substrate with a Zn-Ni layer containing Ni in an amount higher than said Zn-Ni-alloy plated layer.