Electrochemistry
Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Articles
Study of Adsorption Behavior and Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Novel Thiadiazole Derivative
Zhulin CONGWeihua LIDeping HUZhenggang LANBaorong HOU
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2015 Volume 83 Issue 4 Pages 262-267

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Abstract

N′-(4-hydroxy-3-methoxybenzylidene)-2-(5-p-tolyl-1,3,4-thiadiazol-2-ylthio) acetohydrazide (HMTH) was studied as a novel corrosion inhibitor for carbon steel in hydrochloric acid solution by potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), chronoamperometry (CA), cyclic voltammetry (CV) techniques and Quantum chemical calculation. The surface morphology of carbon steel in HCl solution in the absence and presence of HMTH was investigated by scanning electron microscopy (SEM). The mechanism of adsorption was determined from Fourier transform infrared spectroscopy (FTIR) and the potential of zero charge (Epzc). HMTH was found to be an effective corrosion inhibitor by forming a stable adsorption layer on carbon steel.

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© 2015 The Electrochemical Society of Japan
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