Galvanic Corrosion: What Is It & How Do You Avoid It?

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Galvanic corrosion is a common occurrence in most marine equipment. It develops when salt dissolves in water as it releases electrolytes which are then drawn towards the electrons found in electromechanical metal surfaces. Once electrolytes attach to such metals, an electrical flow occurs, which causes galvanic corrosion. But, with the help of advanced paint or powder coating systems, you can avoid these detrimental effects on marine applications.

Today’s article will look further into galvanic corrosion, how this differs from standard decay, and how you can help your clients avert from it happening. As acclaimed industrial powder coating manufacturers, we have firsthand experience helping our clients protect marine applications from galvanic corrosion and other damaging factors.

What Is The Difference Between Galvanic & Standard Corrosion? 

Galvanic corrosion accelerates the standard corrosion of metals within electrolytes. The corrosion you see on garden equipment can weaken joints and cause surfaces to become unattractive. However, galvanic corrosion can be even more extensive with its effects. In fact, it can cause the failure of joints and structures.

This process only occurs when two electromechanical metal surfaces are in contact. An example would be the Eiffel Tower’s steel, aluminium, and brass combination. Even after two years, the aluminium saw vast perforations.

How Do You Avoid Galvanic Corrosion?

There are several ways to avoid galvanic corrosion for marine applications, including paint systems, powder coating and the method of galvanising. Here’s further information on all three:

Marine Oil Paint

Marine oil paint uses a specially modified substance that offers air drying. This is a paint system for marine applications that is commonly in use as an affordable option for the exterior of boats and other similar structures that have consistent exposure to water. However, this topcoat finishing method isn’t the most long-lasting or durable.

Related: Marine Powder Coatings: Durable And Reliable


What is galvanising? Galvanising is a system where iron or steel is immersed into molten zinc that is heated to a high temperature of 840 F. The zinc, then alloys with the metal’s surface. This produces a protective coating resistant to corrosion and other damaging conditions. It does this by absorbing corrosive materials before reaching the object’s surface.

Powder Coating

On the other hand, electrostatic powder coating is a far superior finishing technique to other marine paint systems. For instance, powder coating works by infiltrating a surface barrier that effectively prevents destructive conditions from penetrating or damaging the surface. Through an irreversible chemical reaction, marine equipment surfaces are highly resistant, optimised in performance, long-lasting and aesthetically pleasing.

This makes powder coating the ultimate choice for businesses across the marine industry. Furthermore, it’s a highly cost-effective solution due to its longevity and our ability to adhere to several applications at once when finishing.

Related: E-Coating vs Powder Coating | Why Powder Coating Is The Unmatched Choice

R&M Industrial Powder Coating Manufacturer 

We hope that you understand the beneficial properties of powder coating over other marine paint systems and galvanising. So, it’s vital that you find the right industrial powder coating manufacturer to protect your marine equipment surfaces. Here at R&M, we are a West Midland Powder Coating company who are renowned for our attention to detail and the exceptional service we provide to every client. Let us help you exceed your customers’ expectations by getting in touch with us today on 01384898765.

Furthermore, if you found this blog useful, why not take a look at: Powder Coating For Defence Equipment: What Is It Used For & Why Use It?

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Do you have a project that you would like to discuss with us? We can handle any sized contract and we have specialists ready to take your call. Get in touch with us today for a free, non obligatory quotation.

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