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Article | REF: COR620 V2

Corrosion and protection of metals in marine media

Authors: Juan Creus, René Sabot, Philippe Refait

Publication date: April 10, 2021, Review date: October 24, 2019

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2. Mechanisms of marine corrosion

The main modes of corrosion are all liable to come into play. The specific characteristics of seawater, however, easily lead to pitting corrosion and crevice corrosion , encouraged by chloride ions, galvanic corrosion , encouraged by the increased electrical conductivity, and biocorrosion , encouraged by biological activity. Finally, marine corrosion occurs differently depending on whether the metal is permanently submerged, alternating with dry periods, only in contact with sea-spray, etc.

2.1 Corrosion zones

The behaviour of materials in respect of corrosion can vary considerably according...

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