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Corrosion performance of a carbon steel exposed to LiBr-H2_O solution at low temperatures

机译：暴露在LiBr-H2_O溶液中的碳钢在低温下的腐蚀性能

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A corrosion study has been made using the electrochemical current and potential noise technique, polarization curves and conventional weight loss method to determine the corrosion resistance of a carbon steel exposed to LiBr-H_2O (50% wt.) corrosive solution at 25, 50, 60, 70 and 80°C. From the noise measurements, the resistance noise (R_n) was determined, and then the Stern-Geary equation and Faraday's Law were used to determine the mass loss. The results indicated that the corrosion rates increased with temperature. SEM observations of the corroded samples indicated that the carbon steel suffered localized corrosion; these results were according to the pitting index obtained from the current time series data. To support the corrosion mechanism, EDS analysis of the corrosion products were also made. Through the polarization curves, the Tafel slopes were obtained together with some qualitative corrosion characteristics of the carbon steel.
机译：使用电化学电流和电位噪声技术，极化曲线和常规的失重法进行了腐蚀研究，以确定暴露于25、50、60的LiBr-H_2O（50％wt。）腐蚀性溶液中的碳钢的耐腐蚀性。 ，70和80°C。从噪声测量中，确定电阻噪声（R_n），然后使用斯特恩-格里方程和法拉第定律确定质量损失。结果表明，腐蚀速率随温度的升高而增加。扫描电镜对腐蚀样品的观察表明，碳钢受到局部腐蚀。这些结果是根据从当前时间序列数据获得的点蚀指数得出的。为了支持腐蚀机理，还对腐蚀产物进行了EDS分析。通过极化曲线，获得了Tafel斜率以及碳钢的一些定性腐蚀特性。

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