Marine Environment Treatment

Why does a marine environment accelerate corrosion?
Corrosion is a spontaneous electrochemical process involving several oxidation-reduction reactions that occur in the presence of water and oxygen.
The electrochemical process begins with an anodic reaction in which an iron atom loses two electrons and becomes an iron ion soluble in water. As a result, craters or holes (pitting) may develop in the metal over time.
Without water, electron transfer is almost impossible, so in dry environments the rusting process is much slower.

Painting for Marine Environments (Types of Corrosion)

Uniform Corrosion (General Corrosion) – In this case, the surface of the material is attacked uniformly, making it possible to estimate the rate of material thickness loss. Methods for preventing uniform corrosion include coatings, painting, corrosion inhibitors, and cathodic protection.

Galvanic Corrosion – This is caused by electrical contact and an electrolytic connection, such as a saltwater solution, between two metals that differ in their chemical potential.

Pitting Corrosion– This type of corrosion attacks the metal surface locally. It is typical in metals where the protective passive layer is damaged. In areas where this layer has been compromised, anodic dissolution of the metal progresses.

Stress Corrosion– This occurs when low mechanical stresses are present in a corrosive environment. Due to the corrosive environment, a failure develops that appears to be mechanical failure caused by stress, but in fact it is promoted by the corrosive environment and would not have occurred otherwise.