Corrosion inhibition of SAE 1018 carbon steel in H2S and HCl solutions by lemon verbena leaves extract

被引：34

作者：

Fattah-alhosseini, Arash ^{[1
]}

Noori, Mandis ^{[1
]}

机构：

[1] Bu Ali Sina Univ, Dept Mat Engn, Hamadan 6517838695, Iran

来源：

MEASUREMENT | 2016年 / 94卷

关键词：

Corrosion inhibition; Carbon steel; Lemon verbena extract; Electrochemical impedance spectroscopy; Tafel polarization; MILD-STEEL; ACIDIC MEDIA; HYDROCHLORIC-ACID; SURFACE; BEHAVIOR; IRON; SPECTROSCOPY; ADSORPTION; ALKALINE; SULFIDE;

D O I：

10.1016/j.measurement.2016.09.029

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

H2S and HCI can be noted among the most important corrosive factors existing in different parts of the oil industry. This study was performed to investigate the corrosion taking place in those parts of oil industry which simultaneous presence of both HCl and H2S are considered. The corrosion inhibition behavior of lemon verbena leaves extract on carbon steel in H2S and HCI solutions was studied by means of methods such as, Tafel polarization and electrochemical impedance spectroscopy (EIS). Tafel polarization plots showed that the lemon verbena extract acts as a mixed-type inhibitor. The adsorption mechanism was found physisorption. Delta G(ads)(0), and k(ads) were determined and discussed and Langmuir isotherm was selected as the best fitted adsorption isotherm. According to the obtained results, the maximum value of inhibition efficiency was obtained about 95.61% in the presence of 2.7 g/L, lemon verbena extract. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：787 / 793

页数：7

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