Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/7321
Title: Experimental and theoretical study of the effect of some heterocyclic compounds on the corrosion of low carbon steel in 3.5% NaCl medium
Authors: Şahin, M.
Gece, G.
Karcı, Fikret.
Bilgiç, S.
Keywords: Corrosion
Heterocyclic compounds
Inhibitor
Steel
Theoretical calculations
Computation theory
Concentration (process)
Corrosion inhibitors
Extrapolation
Sodium chloride
Corrosion parameters
Carbon steel
Publisher: Springer Netherlands
Abstract: The efficiency of three heterocyclic compounds, 3-amino-1,2,4-triazole, 4-hydroxy-2H-1-benzopyran-2-one and 4-hydroxy-3-(1H-1,2,4-triazole-3-ylazo)-2H- 1-benzopyran-2-one (abbreviated 3-ATA, 4-HQ and 3-ATA-Q, respectively) as steel corrosion inhibitors in 3.5% NaCl has been investigated by Tafel extrapolation and linear polarization methods. Corrosion parameters and adsorption isotherms were determined from current-potential curves. It was found that inhibition efficiencies (?%) and surface coverage (?) increase with an increase in the concentration of 3-ATA and 3-ATA-Q. However, 4-HQ accelerates the corrosion rate as its concentration increases. The adsorption of 3-ATA and 3-ATA-Q on the steel surface obey Langmuir isotherm. A clear correlation was found between corrosion inhibition efficiency and theoretical parameters obtained by the density functional B3LYP/6-31g(d) method. The experimental results are supported by the theoretical data. © 2008 Springer Science+Business Media B.V.
URI: https://hdl.handle.net/11499/7321
https://doi.org/10.1007/s10800-008-9517-3
ISSN: 0021-891X
Appears in Collections:Fen-Edebiyat Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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