کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
185438 459597 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of Anodamine on the corrosion behavior of 1018 mild steel in deionized water: II. Electrochemical Impedance Analysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
The effect of Anodamine on the corrosion behavior of 1018 mild steel in deionized water: II. Electrochemical Impedance Analysis
چکیده انگلیسی


• The inhibitor layer gets more protective as Anodamine level increases.
• The barrier layer gets thinner as inhibitor layer gets more protective.
• Increased potential enhances adsorption of Anodamine in passive range.

Electrochemical Impedance Spectroscopy (EIS) has been used to explore the corrosion and electrochemical behavior of 1018 mild steel (MS) in deaerated, deionized water containing different concentrations of the filming amine inhibitor Anodamine. The Point Defect Model (PDM) was optimized on the EIS data using the newly-developed procedure to study the mitigation mechanism of Anodamine. The optimization results suggest that, as the concentration of Anodamine increases, the pore resistance of the adsorbed inhibitor, the charge transfer resistance, and the Warburg coefficient associated with the transport of redox species through the porous outer layer of the passive film increase, with the latter being the primary cause of inhibition. Accordingly, the hydrophobic layer of adsorbed Anodamine becomes more protective and the inhibitory effect of Anodamine is enhanced as its concentration increases. In addition, within the passive range, increased applied anodic potential enhances the adsorption of Anodamine and hence enhances its inhibitory effect.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 136, 1 August 2014, Pages 493–503
نویسندگان
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