Antifouling paint behavior

Concentrations of copper in seawater can cause accelerated corrosion of metalUc components. In unpolluted seawater, the copper concentration is 0.2 ppb, which is typically not high enough to influence a metal s corrosion behavior. If, however, the copper concentration is increased above approximately 30 ppb, corrosion of aluminum alloys can occur. The copper concentration may be increased due to a number of factors including copper leaching from antifouling paints, pollutants containing copper, or nearby copper alloy corrosion. If the copper deposits onto aluminum... 

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