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首页> 外文期刊>International Journal of Electrochemical Science >Potentiodynamic and Quantum Studies of Some Amino Acids as Corrosion Inhibitors for Copper
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Potentiodynamic and Quantum Studies of Some Amino Acids as Corrosion Inhibitors for Copper

机译：某些氨基酸对铜的腐蚀抑制剂的电位动力学和量子研究

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A comparative study of different types of amino acids: proline, cysteine, phenyl alanine, alanine,hisitidine and glycine as inhibitors for copper corrosion in 8M phosphoric acid at differenttemperatures was carried out. Potentiodynamic polarization and rotation techniques were applied tostudy the metal corrosion behaviour in the absence and presence of different concentrations of thesesinhibitors. The results reveal that amino acids have strongest inhibitive effects that provide goodprotection to copper surface against corrosion in acid solutions. Adsorption of amino acids on coppersurface, in 8M phosphoric acid solution, follows Temkin adsorption isotherm model. The ads. valueswere calculated and indicated physical adsorption. Quantum chemical parameters were calculatedusing semiempirical PM6 method to find a good correlation with the inhibition efficiency. A goodcorrelation was found between the theoretical calculations and experimental observations.
机译：进行了不同类型氨基酸的比较研究：脯氨酸，半胱氨酸，苯基丙氨酸，丙氨酸，组氨酸和甘氨酸作为8M磷酸在不同温度下腐蚀铜的抑制剂。应用电位动力学极化和旋转技术研究了在不同浓度的这些抑制剂存在和不存在下的金属腐蚀行为。结果表明，氨基酸具有最强的抑制作用，可为铜表面提供良好的保护，使其免受酸溶液的腐蚀。在8M磷酸溶液中，铜表面氨基酸的吸附遵循Temkin吸附等温线模型。广告。计算出值并指示物理吸附。利用半经验PM6方法计算了量子化学参数，发现其与抑制效率具有良好的相关性。在理论计算和实验观察之间发现了良好的相关性。

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