Understanding the Corrosion Inhibition Mechanism of Mild Steel in Hydrochloric Acid by a Triazole Derivative: A Combined Experimental and Theoretical Approach

The effect of an heterocycle triazole, namely (1-(4-methoxyphenyl)-1H-1,2,3-triazol-4-yl)methanol (MTM) on the corrosion of mild steel in hydrochloric acid solution has been investigated using electrochemical methods for a wide temperature range, FT-IR spectroscopy and SEM techniques. MTM was found...

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Published inProtection of metals and physical chemistry of surfaces Vol. 55; no. 5; pp. 973 - 985
Main Authors Aziz Boutouil, Hrimla, Meryem, Laamari, My Rachid, Elazhary, Ilham, Ben El Ayouchia, H., El Haddad, Mohammadine, Anane, Hafid, Stiriba, Salah-Eddine
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2019
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry and Materials Science
Computer simulation
Corrosion
Corrosion and Coatings
Corrosion inhibitors
Corrosion mechanisms
Distribution functions
Hydrochloric acid
Industrial Chemistry/Chemical Engineering
Infrared spectroscopy
Inorganic Chemistry
Low carbon steels
Maintenance management
Materials Science
Metallic Materials
Molecular dynamics
Physicochemical Problems of Materials Protection
Radial distribution
Triazoles
Tribology
MD simulations
inhibition
Noncovalent interactions (NCI)
Corrosion
mechanism
mild steel
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Summary:The effect of an heterocycle triazole, namely (1-(4-methoxyphenyl)-1H-1,2,3-triazol-4-yl)methanol (MTM) on the corrosion of mild steel in hydrochloric acid solution has been investigated using electrochemical methods for a wide temperature range, FT-IR spectroscopy and SEM techniques. MTM was found to inhibit the corrosion of steel by adsorbing to a great extent, even at high temperatures. Computational results point to the phenyl ring as the main structural part which is responsible of the adsorption by electron-accepting to the mild steel surface, while the triazol ring is responsible for the electron-donating. Molecular dynamics simulations (MD), reduced density gradient (RDG), radial distribution function (RDF) provides further insights into the interpretation of inhibition mechanism in a more realistic condition, confirming that the MTM can effectively protect mild steel against corrosion by constraining the diffusion of the particles present on the steel surface.
ISSN:2070-2051
2070-206X
DOI:10.1134/S2070205119050046