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首页> 外文期刊>Corrosion science >Synergistic inhibition effect of potassium iodide and novel Schiff bases on X65 steel corrosion in 0.5 M H_2SO_4
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Synergistic inhibition effect of potassium iodide and novel Schiff bases on X65 steel corrosion in 0.5 M H_2SO_4

机译:碘化钾和新型席夫碱对0.5 M H_2SO_4中的X65钢腐蚀的协同抑制作用

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摘要

The inhibition effect of three Schiff bases (SB-Ⅰ, SB-Ⅱ and SB-Ⅲ) and its synergistic effect with KI on the corrosion of carbon steel in 0.5 M H_2SO_4 solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. Scanning electron microscopy (SEM) was used to characterize the steel surface. The inhibition efficiency increases with the concentration of the Schiff bases and increased further with the presence of KI. The thermodynamic parameters K_(ads) and △G° _(ads) are calculated and discussed. The probable inhibitive mechanism is proposed from the viewpoint of adsorption theory.
机译:通过电位动力学极化和电化学阻抗谱技术研究了三种席夫碱(SB-Ⅰ,SB-Ⅱ和SB-Ⅲ)的抑制作用以及与KI的协同作用对0.5 M H_2SO_4溶液中碳钢的腐蚀作用。 。扫描电子显微镜(SEM)用于表征钢表面。抑制效率随着席夫碱浓度的增加而增加,并且随着KI的存在而进一步增加。计算并讨论了热力学参数K_(ads)和△G°_(ads)。从吸附理论的角度提出了可能的抑制机理。

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