Investigation of the Effect of Vanillin as a Green Corrosion Inhibitor for Stainless Steel Using Electrochemical Techniques مقاله
Journal of Physical & Theoretical Chemistry Autumn 2012, Volume 9 - Number 3 علمی-پژوهشی (وزارت علوم) (13 صفحه - از 149 تا 161)
Vanillin offers interesting possibilities for corrosion inhibition because of its safe use and high solubility in water. The effect of vanillin on the corrosion inhibition of AISI 304 stainless steel in 0.5M H2SO4 solution has been studied using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Furthermore, this paper demonstrates that the electrochemical noise (EN) technique under open circuit conditions as the only truly noninvasive electrochemical method can be applied to investigate the corrosion inhibition. According to calculation of the total amount of noise charges due to all partial signals resulted from wavelet analysis of EN current data, it is possible to obtain the inhibition efficiency (IE) of an inhibitor. These IE values show a reasonable agreement with those obtained from potentiodynamic polarization and EIS measurementsکلیدواژه ها:
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