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首页> 外文期刊>International Journal of Electrochemical Science >Carbon Steel Corrosion Behaviour in Aqueous Carbonated Solution of MEA/ [bmim] [DCA]
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Carbon Steel Corrosion Behaviour in Aqueous Carbonated Solution of MEA/ [bmim] [DCA]

机译：MEA / [bmim] [DCA]碳酸水溶液中的碳钢腐蚀行为

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Carbon steel corrosion rates were measured in carbonated solution mixtures of monoethanolamine(MEA) and 1-Butyl-3-methylimidazolium dicyandiamide ([bmim] [DCA]) and MEA without [bmim][DCA], using polarization curve and electrochemical impedance spectroscopy (EIS). Corrosion testswere carried out for 4.0 M carbonated MEA and [bmim] [DCA] concentration varied from 0.1 to 1.0o M. The CO2 loading was 0.55 mol/mol and temperature was varied from 40 to 80 C. Results showedadding [bmim] [DCA] decreased the corrosion rate of carbon steel for 4.0 M MEA/ [bmim] [DCA]o system. However, the effect of [bmim] [DCA] addition was less as the temperature increased to 80 C.Scanning Electron Microscope (SEM) and Energy dispersive X-ray analysis (EDX) were also carriedout to characterize the surface morphology and corrosion product formed on the electrode surface. TheSEM and EDX spectrum showed that a protective corrosion layer was formed on the electrode surfacefor 4.0 M MEA/ [bmim] [DCA] system. The corrosion rate of carbon steel was also measured usingo EIS at 40 C and 4.0 M MEA/ 1.0 M [bmim] [DCA] with different exposure times. It was found thecorrosion rate increased at first, but decreased progressively with time. The results from EIS areconsistent with those found from the polarization curve, SEM and EDX.
机译：使用极化曲线和电化学阻抗光谱法（MEA）和1-丁基-3-甲基咪唑二氰基双氰胺（[bmim] [DCA]）和不含[bmim] [DCA]的MEA的碳酸盐溶液混合物测量了碳钢腐蚀速率， EIS）。对4.0 M碳酸MEA进行了腐蚀测试，[bmim] [DCA]浓度从0.1到1.0oM。CO2负载为0.55 mol / mol，温度从40到80C。结果显示，添加[bmim] [DCA] ]降低了4.0 M MEA / [bmim] [DCA] o系统的碳钢腐蚀速率。但是，[bmim] [DCA]的添加随着温度升高至80°C而降低。还进行了扫描电子显微镜（SEM）和能量色散X射线分析（EDX）以表征表面形貌和形成的腐蚀产物在电极表面上。 SEM和EDX光谱表明，对于4.0 M MEA / [bmim] [DCA]系统，在电极表面形成了保护腐蚀层。还使用EIS在40 C和4.0 M MEA / 1.0 M [bmim] [DCA]下以不同的暴露时间测量了碳钢的腐蚀速率。发现腐蚀速率起初增加，但随时间逐渐降低。 EIS的结果与极化曲线，SEM和EDX的结果一致。

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