Abstract
AbstractZn and frozen 3.5 wt.% NaCl solution were used to simulate galvanized steel structures exposed to the seawater in the Polar Regions. The conductivity of the frozen salt solution and the corrosion of the Zn were characterized by electrochemical impedance spectroscopy, galvanic current measurement, and surface analyses. The results indicated that the completely frozen 3.5 wt.% NaCl solution was still conductive and corrosive, and the galvanic effect between different metals could not be ignored. The corrosion damage risk of metallic structures, particularly in the joint regions, can be high under freezing marine conditions in the Polar Regions.
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