Study of the inhibition mechanism of imidazoline amide on CO2 corrosion of Armco iron

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	Study of the inhibition mechanism of imidazoline amide on CO2 corrosion of Armco iron
	X. Y. Zhang; F. P. Wang; Y. F. He; Y. L. Du
	2001
发表期刊	Corrosion Science
ISSN	0010-938X
卷号	43 期号:8 页码:1417-1431
摘要	The inhibition mechanism and adsorption/desorption behavior of imidazoline amide (IM) on Fe surface in 3.0 mol l(-1) NaCl solution saturated with 0.1 MPa CO2 were studied by electrochemical impedance spectrum, polarization curves, surface analyses techniques such as scanning tunnel microscope and X-ray photoelectron spectroscopy. The results showed that the adsorption of IM on the Fe surface in the CO2 solution obeys Langmuir's isotherm and thermodynamic theory. The Gibbs adsorption energy (DeltaG(0)) was calculated to be 30.4 kJ mol(-1). There exists a desorption potential of IM on the Fe surface. When the applied potential on the Fe electrode is over the desorption potential, IM has no inhibition effect on the corrosion of Fe in 3.0 mol l(-1) NaCl solution saturated with 0.1 MPa CO2. The inhibition mechanism of IM on CO2 corrosion is related closely to its adsorption/desorption behavior. The pendant function group in the IM structure plays a key role in the inhibition of CO2 corrosion. The increase of temperature and the addition of chloride ion decrease the adsorption potential of IM on Fe surface in the 3.0 mol l(-1) NaCl solution saturated with 0.1 MPa CO2. (C) 2001 Elsevier Science Ltd. All rights reserved.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110015, peoples r china.;zhang, xy (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110015, peoples r china
关键词	Inhibition Mechanism Imidazoline Amide Armco Iron Co2 Corrosion Carbon-dioxide Corrosion Mild-steel Chloride Solutions Kinetics
URL	查看原文
WOS记录号	WOS:000169447700002
引用统计	被引频次：109[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/36913
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. Y. Zhang,F. P. Wang,Y. F. He,et al. Study of the inhibition mechanism of imidazoline amide on CO2 corrosion of Armco iron[J]. Corrosion Science,2001,43(8):1417-1431.
APA	X. Y. Zhang,F. P. Wang,Y. F. He,&Y. L. Du.(2001).Study of the inhibition mechanism of imidazoline amide on CO2 corrosion of Armco iron.Corrosion Science,43(8),1417-1431.
MLA	X. Y. Zhang,et al."Study of the inhibition mechanism of imidazoline amide on CO2 corrosion of Armco iron".Corrosion Science 43.8(2001):1417-1431.