Penetration of electrolyte solution into coating and the creice corrosion between coating defect and surface of steel matrix is main reason of corrosion on carbon steels with hunk of coating defects.

• 电解质溶液向涂层内部的渗透以及涂层缺陷与钢基本间的缝隙腐蚀是导致具有大块涂层缺陷碳钢腐蚀的主要原因.