2-(4-(Diethylamino)-2-hydroxybenzyledene) Hydrazinecarboamide as Corrosion Inhibitor on AA2024-T3 Aluminium Alloy in 0.5 M Hydrochloric Acid Solution
No Thumbnail Available
Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
Pleiades Publishing compmg@maik.ru
Abstract
A new compound 2-(4-(diethylamino)-2-hydroxybenzyledene) hydrazinecarboamide (DHBHC) was prepared by the condensation of thiosemicarbazide and diethylaminosalicyaldehyde in ethanol–water mixture and its purity was confirmed with IR, H1 and C13 NMR. Anticorrosion properties of this new compound were studied on the aluminium alloy AA2024-T3 in 0.5M HCl solution at 303 K by potentiodynamic polarization, electrochemical impedance spectroscopy and weight loss method. The inhibition efficiency of DHBHC was found to increase with an increase of its concentration. The inhibition efficiency obtained in this study was 96 ± 3% in the presence of 10 × 10?5 M of DHBHC. The surface morphology of the alloy was investigated both in the presence and in the absence of the inhibitor by field emission scanning electron microscopy, 3D profilometry and X-ray photoelectron spectroscopy. © 2018, Allerton Press, Inc.
Description
Keywords
Aluminum corrosion, Chlorine compounds, Corrosion, Efficiency, Electrochemical impedance spectroscopy, Field emission microscopes, Hydrochloric acid, Profilometry, Scanning electron microscopy, X ray photoelectron spectroscopy, AA2024-T3, Anti-corrosion property, Field emission scanning electron microscopy, Hydrochloric acid solution, Inhibition efficiency, inhibitor, Thiosemicarbazides, Weight loss method, Electrochemical corrosion
Citation
Surface Engineering and Applied Electrochemistry, 2018, 54, 3, pp. 286-296