Zinc Nickel Plating

Zinc nickel plating by spc.

Zinc nickel plating.

Zinc nickel can also provide high temperature corrosion protection about 500 f where many other finishes begin to fall off in performance. Zinc plating with chromate can also be used to improve adhesion of secondary paint operations. Zinc nickel platings are normally used if the traditional zinc plating. Zinc nickel provides performance for the cost premium relative to zinc and cadmium plating.

Common specifications for zinc nickel are found throughout vehicle manufacturing industry and astm b841 or ams 2417. In particular a zinc nickel alloy offers far superior corrosion protection than when using zinc alone as the addition of nickel slows the zinc corrosion process. Various industries pushed concertedly for higher corrosion performance. Zinc nickel platings were developed as a result of increasing requirements with regard to corrosion protection in particular from the automotive industry against exposure to temperature road salt and climatic conditions.

They sought solutions that would go beyond the. A conversion coating of chromate can be applied after zinc plating to increase the level of corrosion resistance. Zinc is an electrolytic plating process that acts as a sacrificial coating to protect the substrate from corrosion. Zinc nickel plating can also serve as a sacrificial coating for an underlying substrate corroding before the metal underneath is effected.

Zn ni alloy coatings usually composed of approximately 85 zinc and 15 nickel are electroplated on carbon steel as a protective coating in a process similar to the way zinc coatings are applied. While zinc and nickel are frequently used in industrial plating on their own an alloy of the two metals offers a number of important benefits.