Zinc-Nickel for Corrosion Protection (with Video)
Zinc-nickel is an environmentally- and operator-friendly alternative to cadmium. It combines the sacrificial coating properties of zinc with the strength, ductility, and corrosion resistance of nickel – creating a surface finish that, in some cases, is superior to cadmium.
Watch the video to learn more about why you should use zinc-nickel and how to properly apply it.
Although an LHE zinc-nickel deposit has been available for over 20 years, it has seen a significant increase in use over the last few years coinciding with the aerospace industry’s and the environmental push to find safe and viable alternatives to cadmium coatings. Selective plating process of zinc-nickel is approved by Boeing, Goodrich, Messier-Bugatti-Dowty, Bell, NASA, Airbus, and more.
In addition to the numerous commercial specifications written, AMS 2451/9, Brush Plating Zinc-Nickel, Low Hydrogen Embrittlement was written to cover the requirements for brush plating zinc-nickel by electrodeposition. When tested in accordance with ASTM B 117, zinc-nickel withstands 1000 hours of exposure to salt spray corrosion with no evidence of base metal corrosion; as well as passing hydrogen embrittlement testing with notched tensile samples being subjected to a 200-hour sustained load test at 75% of the notched ultimate tensile strength. This conforms with ASTM F519 and all applicable Federal, Military, AMS, ASTM requirements.