Zinc Nickel Plating, most commonly known as Zinc alloy electroplating, is an electrogalvanization process for corrosion protection of metal surfaces and increasing their wear resistance. The corrosion protection is primarily due to the anodic potential dissolution of zinc versus iron and zinc acts as a sacrificial anode for protecting iron (steel). While steel is close to -400 mV, depending on alloy composition, electroplated zinc is much more anodic with -980 mV and steel is preserved from corrosion by cathodic protection. Plating zinc with cobalt or nickel at levels less than 1% has minimal effect on the potential; but both alloys improve the capacity of the zinc layer to develop a chromate film by conversion coating. For more please visit the website kcjplating.
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