首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical, Thermodynamic and Adsorption Studies of (+)-Catechin Hydrate as Natural Mild Steel Corrosion Inhibitor in 1 M HCl
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Electrochemical, Thermodynamic and Adsorption Studies of (+)-Catechin Hydrate as Natural Mild Steel Corrosion Inhibitor in 1 M HCl

机译:(+)-儿茶素水合物作为天然低碳钢缓蚀剂在1 M HCl中的电化学,热力学和吸附研究

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The inhibiting action of (+)-catechin hydrate on the corrosion of mild steel in hydrochloric acid hasbeen studied. The results from weight loss, Tafel polarization and electrochemical impedancemeasurements consistently identify (+)-catechin hydrates as a good inhibitor. Polarization curvesindicate that (+)-catechin hydrate act as mixed type inhibitor with predominant inhibition at anodicsite. Impedance spectroscopy revealed that the corrosion of mild steel in hydrochloric solution wasinfluenced to some extent by charge transfer. The inhibition efficiencies (IE %) of (+)-catechin hydratewas decreased exponentially with the temperatures. Surface analyses via scanning electron microscope(SEM) show a significant morphological improvement on the mild steel surface in addition of (+)- catechin hydrate. The inhibitive action of (+)-catechin hydrate follows the Langmuir adsorption model.
机译:研究了水合(+)-儿茶素对盐酸中低碳钢腐蚀的抑制作用。重量减轻,Tafel极化和电化学阻抗测量的结果一致地确定(+)-儿茶素水合物是一种良好的抑制剂。极化曲线表明,(+)-儿茶素水合物起着混合型抑制剂的作用,主要在阳极位被抑制。阻抗谱分析表明,电荷转移对软钢在盐酸溶液中的腐蚀有一定影响。 (+)-儿茶素水合物的抑制效率(IE%)随温度呈指数下降。通过扫描电子显微镜(SEM)进行的表面分析表明,除了(+)-儿茶素水合物外,低碳钢表面的形态也得到了显着改善。 (+)-儿茶素水合物的抑制作用遵循Langmuir吸附模型。

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