pragukorrosioon
Pragukorrosioon, also known as crevice corrosion, is a localized form of electrochemical corrosion that occurs in confined spaces or crevices where fluid flow is restricted. This type of corrosion typically develops in narrow gaps between surfaces, such as between a bolt and a plate, or within deposits on metal surfaces. The restricted flow within these crevices leads to the formation of stagnant zones, where oxygen depletion occurs, creating a differential aeration cell. This imbalance in oxygen concentration accelerates the corrosion process in the oxygen-depleted area.
Pragukorrosioon is particularly common in marine environments, where seawater can penetrate tight spaces, but it can
Preventing pragukorrosioon involves designing systems to minimize crevice formation, using corrosion-resistant materials, and applying protective coatings.