Zinc nickel is not the most common surface coating in modern industry, but it has its own distinct benefits. An understanding of these benefits may help you decide if zinc nickel is the most appropriate approach for you.
What is zinc nickel plating?
When a surface such as carbon steel, aluminium, brass or copper is coated with an alloy of zinc and nickel, using electroplating as the method, that is zinc nickel plating. It is found in the aerospace and automotive industries as well as electrical transmission structures, construction and agriculture.
Normally, the alloy is 85% zinc to 15% nickel. It is used to protect the underlying surface. Specialists such as www.swmf.co.uk/surface-coatings/zinc-nickel-alloy-plating/ usually offer zinc nickel plating as one of several coating options.
What are its benefits?
The reason zinc nickel is chosen over other forms of coating, including zinc alone, is that it is particularly resistant to wear and corrosion. It is also well-suited to situations that involve high temperatures, such as for engine components.
When compared to cadmium, another common coating, it is safer for both people and the environment as it does not have the same toxic properties. This allows it to meet legal standards regarding safety. Cadmium use is highly regulated because it is a known carcinogen. Zinc nickel coatings can also have an aesthetically pleasing shine.
When not to use zinc nickel
Not all items require the high degree of protection offered by zinc nickel plating, or are easier and cheaper to simply replace if they are damaged. In these cases, you may choose a lower-quality coating option to reduce the cost.
There may also be situations where the distinct benefits of galvanising or anodising prove more effective for your purpose. It is important to weigh the different features of the various types of coating before making any decision.
Choosing a surface coating involves considering a range of different factors, including cost and legal regulation, as well as the actual quality of the metal. Zinc nickel may be a good solution in cases where non-toxic corrosion resistance is required.
