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Study of Adsorption Behavior and Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Novel Thiadiazole Derivative

By Zhulin Cong, Weihua Li, Deping Hu, Zhenggang Lan and Baorong Hou

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 (E-pzc). HMTH was found to be an effective corrosion inhibitor by forming a stable adsorption layer on carbon steel. (C) The Electrochemical Society of Japan, All rights reserved

Topics: Carbon Steel, Acid Solution, Electrochemical Impedance Spectroscopy, PZC, Science & Technology, Physical Sciences, Electrochemistry, Electrochemistry, MOLECULAR-DYNAMICS SIMULATION, M HCL SOLUTION, CARBON-STEEL, CORROSION-INHIBITORS, Q235 STEEL, TRIAZOLE DERIVATIVES, PICKLING SOLUTIONS, H2SO4 SOLUTIONS, LEAVES EXTRACT, WEIGHT-LOSS
Year: 2015
DOI identifier: 10.5796/electrochemistry.83.262
OAI identifier: oai:ir.qibebt.ac.cn:337004/6429
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