Galvanic Corrosion Prevention Coatings

Galvanic corrosion resistant coatings are applied to protect materials such iron and steel alloys against corrosion.

The coatings act as sacrificial coatings and they will corrode preferentially slowly while minimizing the corrosion occurring to the steel due the electrode potential difference between these metals.

For example, Thermal Spray Zinc (called TSZ) will protect carbon steel .

Dissimilar metals and alloys have different electrode potentials and when   into contact in an electrolyte a galvanic solution (sea water), one metal acting as anode and the other as cathode.

The potential difference between the dissimilar metals or alloys is the driving force to accelerate the corrosion attack on the anode member of the galvanic couple.

 Thermal spray coating process, has been used on many components to work in sea water (SEAWATER is generally considered to be a corrosive environment) including a wide range of structures, such,  bridges, steel tower wind power generation, offshore platform production units and many others.

The technology has been proven to be far more effective corrosion protection than paint systems for providing longer term protection.