Corrosion was the greatest enemy of aluminum and magnesium in marine, Fortunately, the rapidly developing surface engineering sector has found exciting ways to prevent this.

In particular, plasma electrolytic oxidation (PEO) imparts a highly scratch and corrosion-resistant ceramic coating to light metal alloys. It results in the formation of a hard, inert, and electrochemically neutral ceramic surface layer that offers protection to the base alloy in terms of corrosion wear.