Corrosion inhibition of indole-3-carboxylic acid (ICA) on mild steel in 0.1 M H2SO4 solution has been studied through weight loss, potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), and scanning electron microscope (SEM) experiments. Plots from polarization and EIS techniques show ICA acts as a mixed type inhibitor and its high inhibition effectiveness is assumed to occur via the adsorption of the inhibitor molecules on steel surface. It is then found that this adsorption behavior obeys the Langmuir adsorption isotherm. Theoretical techniques incorporating molecular mechanics and molecular dynamics were used to simulate the adsorption of ICA molecule on Fe(1 1 0) surface. (C) 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
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SW Forestry Univ, Fac Sci, Kunming 650224, Peoples R China
SW Forestry Univ, Key Lab Forest Resources Conservat & Use SW Mt, China Minist Educ, Kunming 650224, Peoples R ChinaSW Forestry Univ, Fac Sci, Kunming 650224, Peoples R China
Li, Xianghong
Deng, Shuduan
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SW Forestry Univ, Fac Mat Engn, Kunming 650224, Peoples R ChinaSW Forestry Univ, Fac Sci, Kunming 650224, Peoples R China
Deng, Shuduan
Fu, Hui
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SW Forestry Univ, Fac Sci, Kunming 650224, Peoples R ChinaSW Forestry Univ, Fac Sci, Kunming 650224, Peoples R China