Corrosion inhibition of 2024-T3 aluminum alloy in 3.5% NaCl by thiosemicarbazone derivatives
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier Ltd
Abstract
Three thiosemicarzone derivatives, namely (E)-2-(2-hydroxybenzylidene) hydrazinecarbothioamide(MHC), (E)-2-(2,4-dihydroxybenzylidene)hydrazinecarbothioamide (DHC) and (E)-2-(2,3,4-trihydroxybenzylidene)hydrazinecarbothioamide (THC) were synthesized and their corrosion inhibition action on 2024-T3 aluminum alloy was studied in 3.5% NaCl solution. The surface morphology and surface composition of the corroded alloy were examined using FESEM, 3D profilometry, EDX spectroscopy and X-ray photoelectron spectroscopy. The synthesized inhibitors were found to provide corrosion protection on AA2024-T3 by forming an adsorbed layer of the complex on the alloy surface. They exhibited inhibition efficiency in the order, MHC < DHC < THC. Quantum chemical calculations corroborated the experimental results. © 2018 Elsevier Ltd
Description
Keywords
Aluminum, Chlorine compounds, Corrosion, Corrosion inhibitors, Profilometry, Quantum chemistry, Sodium alloys, Sodium chloride, X ray photoelectron spectroscopy, 2024-T3 aluminum alloy, 3-D profilometry, 3.5% nacl solutions, B. EIS, Corrosion inhibition, Inhibition efficiency, Quantum chemical calculations, Thiosemicarbazones, Aluminum alloys
Citation
Corrosion Science, 2018, 136, , pp. 326-338