Zinc nickel plating consists of a process that delivers superior corrosion resistance to metallic parts, in many cases in the automotive industry for bearings and cases in which regular zinc plating will not provide sufficient protection. Zinc nickel electroplating is quite versatile – it can also be used to protect brass, copper, cast iron, and malleable iron, in addition to steel.
Zinc Nickel Plating Purpose and Process
This process is a form of electroplating that is utilized to apply an acid coating to a metal surface to provide protection for the surface. It involves plating one metal to another through a process called hydrolysis. The plating provides both decorative and protective benefits. To obtain this type of alloy, zinc metal is often plated from an alkaline electrolyte. The preferable composition for the zinc nickel electroplating combination is 12 to 15% nickel with the rest as zinc. This alloy provides considerable sacrificial corrosion – it protects the metal surface plates on by corroding itself first before the metal beneath it undergoes corrosion, even after thermal shock occurs..
This type of plating can be used instead of cadmium electroplating in specific types of applications. Electroplated cadmium is applied to different types of metal, including steel, in order to prevent corrosion of parts – it is used in the aerospace industry, among others. These coatings are highly effective at preventing corrosion. However, zinc nickel plating can be utilized when galvanic interaction applications are involved, enabling it to be more effective than the cadmium plating process.
Benefits of Zinc Nickel Plating
Zinc nickel electroplating is highly economical and efficient as it provides effective corrosion protection for components that are subject to tear and where, reducing the requirement and frequency to replace parts – all of which can save you a considerable amount of money over the long term. This type of plating produces deposits that are uniform, bright, and except passivates such as black and clear. As well, it provides even distribution and excellent coverage for an attractive appearance.
If you are in the market for the use of zinc nickel plating for one or more of your industrial requirements, contact an experienced metal finishing company today to learn about your options.
