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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Comparative Study of Q235 steel and 304 SS in Simulated Concrete Pore Solutions and the Effect of Chloride Ions on their corrosion behavior
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Electrochemical Comparative Study of Q235 steel and 304 SS in Simulated Concrete Pore Solutions and the Effect of Chloride Ions on their corrosion behavior

机译：Q235钢和304SS在模拟混凝土孔隙溶液中的电化学对比研究及氯离子对腐蚀行为的影响

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摘要

The corrosion behavior of Q235 carbon steel and 304 stainless steel (SS) was studied by potentiodynamicpolarization in four types of simulated concrete pore solutions (pH 13.3, 11.5, 9.7). The results showedthat both steels maintained good passivation in the pore solutions, demonstrating similar corrosionresistance. The addition of 0.05 mol/L of Cl- had no influence on the corrosion resistance of 304 SS inthe solutions, whereas pitting corrosion susceptibility of Q235 carbon steel increases in the carbonatesolutions. 304 SS performed much better than Q235 carbon steel in carbonated pore solutions with thecritical chloride concentration 100 times higher than that of Q235 carbon steel. The presence of NaHCO3and Na2CO3 increased the critical [Cl-] for pitting corrosion because of the inhibitive effect ofHCO3/CO32- on the pitting corrosion.
机译：Q235碳钢和304不锈钢（SS）的腐蚀行为是通过四种模拟混凝土孔溶液（pH 13.3,11.5,9.7）的型电位动力学分子化研究。结果表明，两个钢在孔隙溶液中保持良好的钝化，展示了类似的腐蚀功能。添加0.05mol / L的CL-对溶腐蚀性的耐腐蚀性没有影响，而Q235碳钢的蚀腐蚀易感性在碳酸盐中增加。 304 SS在碳酸孔溶液中进行了比Q235碳钢更好，具有比Q235碳钢的100倍的抗癌氯化物浓度。由于HCO3 / CO32-蚀刻腐蚀的抑制作用，NaHCO 3和Na 2 CO 3的存在增加了蚀腐蚀的关键[Cl-]。

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