Patent ID: 8435398
Filing Date: 2013-05-07
Classification: C23C,C25D

Abstract:
1. A method for the deposition of a zinc-nickel alloy layer on a substrate comprising: contacting a substrate of cast iron or steel with an electrolytic composition comprising a source of zinc ions, a source of nickel ions, aminoacetic acid, and an acetate selected from the group consisting of sodium acetate, potassium acetate, ammonium acetate, and mixtures thereof, wherein the acetate and aminoacetic acid are present in a molar ratio of acetate:aminoacetic acid between about 0.35:1 and about 0.91:1; and applying a current to form the zinc-nickel alloy layer having a nickel content of between 10 and 18 wt % on the substrate and substantially no internal tension.