ZINC NICKEL ALLOY PLATING: USING TRIVALENT PASSIVATION

ZINC NICKEL ALLOY PLATING: USING TRIVALENT PASSIVATION

Zinc alloy plating’s mainstream popularity originated in the 1980s. Before then, zinc alloy plating, with the exception of zinc-brass plating, was not heavily used in the industry. Thanks to further refinement and improved production techniques, a variety of zinc alloy plating processes have become commercially acceptable since then. Among them is zinc nickel plating (Zn/Ni alloy plating).

The Production of Zinc Nickel Alloy Plating

To produce this alloy, you can choose two variants:

– Alkaline
– Chloride

The alkaline system has been favored for its ability to provide an even surface plate distribution. Users, such as DeKalb Metal Finishing, combine this alkaline process with a system called trivalent passivation. It is more environmentally friendly than hexavalent systems.

Improvements in techniques and overall qualities have helped creating an increased acceptance of trivalent passivation. While the amount of material employed has increased, together with the price, and there is a decrease in self-healing properties, the overall result is still a better product. The outcome of employing this method is both color consistency and improved longevity.

DeKalb Metal Finishing recognizes the benefits and advantages of the newer system. We have has accepted and now employ the more environmentally sensitive substitute that is trivalent chromate passivation, which is popular in zinc alloy plating for the automotive industry. Call us today for more information.