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首页> 外文期刊>International Journal of Electrochemical Science >Inhibition Effect of Coleus forskohlii leaf extract on Steel Corrosion in 1.0 M HCl Solution: Experimental and Theoretical Approaches
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Inhibition Effect of Coleus forskohlii leaf extract on Steel Corrosion in 1.0 M HCl Solution: Experimental and Theoretical Approaches

机译：彩叶提取物对1.0 M HCl溶液中钢腐蚀的抑制作用：实验和理论方法

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The inhibitive performance of Coleus forskohlii leaf extract on mild steel corrosion process in 1.0 MHCl aqueous solutions was studied. Several methods have been adopted such as, mass loss, Tafelpolarization curves as well as electrochemical impedance spectroscopy (EIS). The inhibitioneffectiveness was found to increase as the inhibitor concentration increased. The impact of temperatureon corrosion inhibition was studied by using EIS method. The thermodynamic parameters (activationenergy, free energy change and entropy change) were calculated. The inhibitor under study isclassified as a mixed type inhibitor. Adsorption isotherms models were examined. Adsorption processobeys Langmuir model. The electronic properties concluded from DFT calculations were exploited togive more understandings to the action approach of studied inhibitor. Scanning electron microscope(SEM) and Energy-dispersive X-ray spectroscopy (EDS) were used to explore the efficiency of theinhibitor. The obtained results confirmed the effectiveness of the studied inhibitor.
机译：研究了锦鸡儿叶提取物在1.0 MHCl水溶液中对低碳钢腐蚀过程的抑制作用。已经采用了几种方法，例如质量损失，Tafel极化曲线以及电化学阻抗谱（EIS）。发现抑制效果随着抑制剂浓度的增加而增加。采用EIS方法研究了温度对缓蚀性能的影响。计算了热力学参数（活化能，自由能变化和熵变）。所研究的抑制剂被分类为混合型抑制剂。研究了吸附等温线模型。吸附过程服从Langmuir模型。通过DFT计算得出的电子特性被用来更好地理解所研究抑制剂的作用方式。用扫描电子显微镜（SEM）和能量色散X射线能谱（EDS）研究了抑制剂的效率。获得的结果证实了所研究的抑制剂的有效性。

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