Effect of 2-amino-3-mercaptopropanoic acid (cysteine) on the corrosion behaviour of low carbon steel in sulphuric acid

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	Effect of 2-amino-3-mercaptopropanoic acid (cysteine) on the corrosion behaviour of low carbon steel in sulphuric acid
	E. E. Oguzie; Y. Li; F. H. Wang
	2007
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	53 期号:2 页码:909-914
摘要	The effect of cysteine (cys) on the corrosion of low carbon steel (LCS) in sulphuric acid solution was investigated using electrochemical and scanning electron microscopy (SEM) techniques. Electrochemical impedance spectroscopy (EIS) results reveal that the presence of cys at low concentrations (0. 1-0.5 mmol L-1) promoted the LCS corrosion process, whereas an inhibiting effect was observed at higher concentrations (1.0-5.0 numol L-1), which was enhanced on deaeration of the test solution. Polarization results revealed that cys actually inhibited the cathodic process at all concentration but exerted a stimulating effect on the anodic metal dissolution reaction. Despite the cathodic inhibiting effect, the polarization resistances at low cys concentrations were less than that in the blank acid. This suggests that the anodic reaction was the predominant influence determining the corrosion rates in the presence of cys. This has been discussed vis-a-vis the catalytic effect of the Fe-cys complex, which turns the Fe surface more electrochemically active. (C) 2007 Published by Elsevier Ltd.
部门归属	chinese acad sci, inst metal res, state key lab corros & protect, shenyang 110016, peoples r china. fed univ technol owerri, dept chem, electrochem & mat sci res lab, owerri, nigeria.;li, y (reprint author), chinese acad sci, inst metal res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;liying@imr.ac.cn
关键词	Low Carbon Steel Corrosion Cysteine Anodic Reaction Cathodic Reaction 1 m Hcl Mild-steel Amino-acids Inhibition Derivatives Methionine Cystine Iodide
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WOS记录号	WOS:000251480900084
引用统计	被引频次：178[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/321006/33764
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	E. E. Oguzie,Y. Li,F. H. Wang. Effect of 2-amino-3-mercaptopropanoic acid (cysteine) on the corrosion behaviour of low carbon steel in sulphuric acid[J]. Electrochimica Acta,2007,53(2):909-914.
APA	E. E. Oguzie,Y. Li,&F. H. Wang.(2007).Effect of 2-amino-3-mercaptopropanoic acid (cysteine) on the corrosion behaviour of low carbon steel in sulphuric acid.Electrochimica Acta,53(2),909-914.
MLA	E. E. Oguzie,et al."Effect of 2-amino-3-mercaptopropanoic acid (cysteine) on the corrosion behaviour of low carbon steel in sulphuric acid".Electrochimica Acta 53.2(2007):909-914.