Choosing Zinc Nickel Plating for Corrosion Protection

 

Zinc Nickel Plating has the ability to offer outstanding corrosion protection, especially when subjected to high temperatures. It is used extensively in automotive under bonnet applications where its temperature and corrosion resistance are vital.

 

Zinc Nickel Plating as an anti-corrosion solution

 

Zinc Nickel is used to plate steel components when they are to be assembled with other dissimilar metals, particularly aluminium, and where there is a greater risk of galvanic corrosion. The plating layer is extremely ductile which enables pipe and tube assemblies to be plated prior to manipulation into their final shape.

 

Its corrosion protection can be enhanced with clear, yellow or black trivalent passivates.

 

Post-Treatments for Zinc Nickel

High nickel-zinc nickel alloy can be post treated with Hexavalent Chrome Free Thick Film, iridescent yellow, bright, blue, black or clear passivate as well as a high quality colour fast black finish. Other post-treatments are available including sealants, lacquers and oils for specific requirements such as enhanced corrosion protection and high torque lubricity.

 

Key Properties of Zinc Nickel

  • Corrosion Protection

  • Typical Rack plated component with colour passivate - 480 hours to White corrosion, 10and in excess to 1000 hours to red corrosion (neutral salt spray)

  • Ductility

  • Temperature Resistance

  • Abrasion resistance - harder than normal Zinc plating systems