In order to study the corrosion performance of a hot-dipped aluminized steel pipe in seawater, the corrosion current was measured over a two-week period using the scanning vibrating electrode technique. It was found that hot-dipped aluminized steel pipe without defects corroded in the order of aluminum, Fe-Al, alloy, and carbon steel. But in the case of an Fe-Al alloy layer with a penetrating defect that reached the base steel, the base steel corroded before the Fe-Al alloy. when the defect was located near the weld (Type 309 stainless steel), the corrosion rate of the exposed base steel was accelerated.
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