Electrochemical Corrosion Behavior of 310S Stainless Steel in Hot Concentrated Tap Water

作者：Xian Wen, Zhong Yin, Lele Liu, Moucheng Li · 发表于：Metals · 年份：2023 · DOI：10.3390/met13040713 · 被引用次数：7 · 研究领域：Hydrogen embrittlement and corrosion behaviors in metals、Corrosion Behavior and Inhibition、Concrete Corrosion and Durability

The corrosion behavior of 310S stainless steel was investigated in synthetic tap water and Ca2+ and Mg2+-free solutions with different concentration ratios at 80 °C using electrochemical measurement techniques and surface analysis methods. The main purpose was to obtain the electrochemical corrosion characteristics under carbonate scale conditions. The specimens displayed a spontaneous passivation state in the solutions with or without Ca2+ and Mg2+ ions. With the enlargement of the concentration ratio of synthetic tap water from 1 to 10 times, the polarization resistance under free corrosion conditions and the pitting potential decreased by about 48% and 327 mV, respectively. The pitting tendency increased with increasing concentration ratio of tap water. The carbonate scales deposited from the synthetic tap water solutions were mainly composed of CaCO3, which led to a slight increase in the polarization resistance and the pitting potential and decrease in the passive current density.