How Does Electroplating Protect Against Corrosion?
Metal components are the backbone of countless industries, but even the strongest metals face a relentless enemy: metal corrosion.
Left unchecked, corrosion weakens structures, reduces product lifespan, and leads to costly repairs or replacements. Fortunately, one of the most effective and widely used solutions is electroplating. Below, we break down the science behind electroplating and explain why it remains one of the most reliable methods for preventing metal corrosion.
What Causes Metal Corrosion?
Corrosion is a natural electrochemical process where metals react with oxygen, moisture, or chemicals in their environment. This reaction forms oxides, such as rust on steel, which gradually eat away and weakens at the metal’s surface.
Common triggers of metal corrosion include:
- Exposure to water or humidity
- Salt (in marine environments)
- Acids and industrial chemicals
- Temperature fluctuations
- Mechanical wear that exposes fresh metal
At Dorsetware, we offer a range of finishes to combat metal corrosion, including:
How Does Electroplating Work?
Electroplating is the process of depositing a thin layer of metal onto the surface of another metal using an electric current. The component to be protected is submerged in a chemical solution containing dissolved metal ions. When current flows through the solution, those ions bond to the component’s surface, forming a uniform, tightly adhered coating.
This coating acts as a protective barrier and depending on the plating metal chosen, it can offer:
- Enhanced corrosion resistance
- Improved hardness and wear resistance
- Better conductivity
- Aesthetic improvements
- Reduced friction
How to Prevent Metal Corrosion with Electroplating
Electroplating protects metals in two ways:
Barrier Protection
The plated layer physically blocks oxygen, moisture, and contaminants from reaching the underlying metal. Without exposure to these elements, the corrosion process cannot begin.
Galvanic Protection
Some plating metals, particularly zinc, corrode preferentially to the base metal. This is known as galvanic protection. In this case, even if the coating is scratched, the zinc will corrode first, preserving the integrity of the underlying steel.
At Dorsetware, we are experts in zinc plating, find out more here.
How to Choose the Right Plating for Your Application
Different environments demand different protective coatings. Factors to consider include:
- Exposure to moisture or chemicals
- Required durability
- Aesthetic preferences
- Electrical conductivity needs
- Industry standards or regulations
Electroplating offers a powerful, versatile method for extending the life of your metal parts and ensuring they perform reliably in any environment. A professional electroplating provider can help determine the most suitable finish for your component and its working conditions.
At Dorsetware, we offer a range of electroplating services. Explore our full range of services online or get in touch with our team to discuss your next project.