Both Zinc and Nickel are widely used in a variety of finishing applications on their own, but a combination of the two metals provides a far greater resistance to corrosion than the individual metals can offer.
Deposits of this metal plating offer a durable finish that helps reduce the development of metal frays that can cause damage to the finished piece. Zinc Nickel provides excellent adhesion with smooth deposits that are blister free.
Top coats and passivation treatments can also improve long-term performance. Zinc Nickel plating can also serve as a “sacrificial” coating for an underlying substrate — corroding before the metal underneath is effected. During salt spray testing, zinc nickel coated parts can withstand the formation of white rust for up to 500 hours, and up to 1,000 hours for red rust.
Zinc Nickel coating is also preferred in applications where the part or component is in contact with aluminum. It helps drastically reduce corrosion and is also able to withstand the higher temperatures associated with engines in automotive industry.
Zinc nickel is the perfect alternative to conventional zinc for any steel part that is intended for exterior use. Zinc nickel provides the most economical corrosion protection available today.
Benefits of Zinc Nickel Plating:
- WEEE, ROHS and EVL compliant trivalent passivation (Chrome 6 Free)
- High thermal resistance (up to 200˚C) makes it suitable for high temperature automotive applications
- Provides Superior Corrosion Resistance – protects the base metal for over 1000 hours to red rust
- Around four times the hardness and therefore wear resistance of standard Zinc plating
- Many of these features make Zinc-Nickel and environmentally friendly alternative for Cadmium plating
- Offers great adhesion for post processing operations