There are two main reasons to consider any type of plating for metal. They include creating a corrosion resistant layer on the base metal and to enhance the aesthetic appearance of the component. Zinc-nickel plating provides both of these features, and it is a cost-effective and long-lasting option to consider.
Different considerations need to be to carefully thought through for each component. It is possible to deposit different percentage weights of nickel or the zinc/nickel coatings based on the final product requirement. Optimal percentage weights are usually 12 to 15% weight zinc/nickel, which provides some of the highest levels of corrosion resistance with both a thin coating as well as a high-density type of coating.
Features to Review
In any corrosive environment, it will be important to not only use a top quality of corrosion resistant material for plating, but the deposits also have to be able to stand up to the temperature of the environment. With zinc-nickel plating that is applied by a top metal finisher, it is possible to have exceptional protection from corrosion even when the component may be exposed to thermal shock.
Even after thermal shock, which can include being in temperatures of up to 250 degrees Fahrenheit, the coating or the deposit will continue to provide top corrosion resistance. With exposure to salt spray these types of deposits are able to provide up to 360 hours until the development of white rust, and over a thousand hours until red rust occurs.
Through the plating process, the deposit thickness of the component can be completely and accurately controlled. This provides very tight tolerances, and with superior adhesions, blisters or incomplete adhesion is not a concern with this plating option.
Working with Components
Unlike some type of plating, with the zinc-nickel combination, it is possible to bend the component for manufacturing even after the plating process without damage. The component will not develop “whiskers”, or the fine strands of metal that can form when zinc is compressed. Through the addition of the nickel to the plating process, these issues are eliminated, which makes zinc-nickel plating an excellent choice for electronic types of components where the formation of these whiskers is highly undesirable.
It is essential to talk to your metal finishing company and consider your plating options. The zinc-nickel plating process can be done using both rack and barrel plating methods, with the size, design and the overall shape of the component often determining which is the best method to consider.
With zinc-nickel plating by Dekalb Metal Finishing parts and components will have a bright, consistent finish with exceptionally high corrosion resistance. To learn more or for complete specifications and test results see www.dekalbmetal.com.
