期刊
RESULTS IN PHYSICS
卷 7, 期 -, 页码 3434-3443出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.rinp.2017.09.012
关键词
Corrosion inhibitor; Mild steel; Polarization; Weight loss; Adsorption
资金
- Program of Science and Technology Department of Sichuan Province [2017JY0180, 2016GZ0172, 2016JY0048, 2016086]
- Project of Dazhou City [KJJ2016002]
- Opening Project of Material Corrosion and Protection Key Laboratory of Sichuan Province [2017CL02]
- Projects of Key Laboratories of Fine Chemicals and Surfactants in Sichuan Provincial Universities [2016JXZ03]
Here, S-allyl-O,O'-diphenyldithiophosphate(SOD1), S-allyl-O,O'-dibenzyldithiophosphate (SOD2) and -Sallyl-O,O'-di(2-phenylethyl)dithiophosphate(SOD3) were successful synthesized and characterized, which acting as the novel corrosion inhibitors for mild steel in hydrochloric acid (HCl) solution were evaluated by electrochemical measurements, weight loss measurement and scanning electron microscopy. Potentiodynamic polarization measurement indicates that the synthesized inhibitors are effective mixed-type inhibitors. The inhibition efficiency increases with inhibitor concentration increasing, decreases with HCl concentration and temperature increasing. The adsorption of SOD1, SOD2 and SOD3 on mild steel surface obeys Langmuir isotherm. The adsorption of SOD1 and SOD3 on mild steel surface is a mixed adsorption involving both physisorption and chemisorption, and that the adsorption of SOD2 on mild steel surface belongs to chemical adsorption. (C) 2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license
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