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Large Carbon Steel Structures Immersed in Seawater Discussion

 

Consider the problem of preventing (or minimising) the corrosion of a large carbon steel structures immersed in seawater. The suggested methods include: painting the structure, applying a protective metallic coating, or cathodic protection using sacrificial anodes or an impressed current. Briefly describe in your own words how each method would work, and sketch a diagram to illustrate the main concepts.