ALKALINE ZINC-NICKEL BATH WITH INCREASED CURRENT EFFICIENCY

摘要

The invention concerns an electroplating bath as well as a method for cathode deposition of a zinc-nickel alloy coating. In accordance with the invention, the bath contains as complexing agent, at least a polyethylenamine. Through addition of an arylsulphonate such as cumenesuphonate or xylenesulphonate, the solubility of the complexing agent is increased, or its local deposition is reduced at the cathode, thereby resulting in an increase in the density of usable current and of the current efficiency by deposition of homogeneous electroplating bath layers and reducing the required work duration.