期刊
CORROSION SCIENCE
卷 112, 期 -, 页码 563-575出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.08.012
关键词
Acid solution; Weight loss; polarization; EIS; Benzothiazole derivative; Carbon steel
资金
- Scientific and Technological Projects of Shanxi Province of China [201603D121022]
Two benzothiazole derivatives, namely 2-(n-hexylamino)-4-(3'-N,N-dimethylamino-propyl)amino-6-(benzothiazol-2-yl)thio-1,3,5-s-triazine (BTC6T) and 2-(n-octylamino)-4-(3'-N,N-dimethylamino-propyl)amino-6-(benzothiazol-2-yl)thio-1,3,5-s-triazine (BTC8T), were synthesized to study their corrosion inhibiting effect against steel in a 1 M HCl solution. The corrosion inhibition efficiency was measured using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, and weight loss methods. Both inhibitors offered extra stability and higher inhibition efficiencies again steel corrosion than previously reported benzothiazole family inhibitors. These inhibitors can be adsorbed onto surfaces by both physical and chemical means. Finally, quantum chemical parameters were calculated using the density functional theory method (DFT) and the correlation between the theoretical and experimental results are discussed. (C) 2016 Elsevier Ltd. All rights reserved.
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