Zn 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.

中文翻译：

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冷冻 3.5 wt.% NaCl 溶液中的腐蚀损伤

Zn 和冷冻的 3.5 wt.% NaCl 溶液用于模拟极地地区暴露于海水中的镀锌钢结构。通过电化学阻抗谱、电流测量和表面分析表征了冷冻盐溶液的电导率和锌的腐蚀。结果表明，完全冻结的 3.5 wt.% NaCl 溶液仍具有导电性和腐蚀性，不同金属之间的电偶效应不容忽视。在极地地区的冰冻海洋条件下，金属结构的腐蚀损坏风险，特别是在接头区域，可能会很高。