Corrosion inhibition and adsorption behavior of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion

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	Corrosion inhibition and adsorption behavior of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion
	E. E. Oguzie; Y. Li; F. H. Wang
	2007
发表期刊	Journal of Colloid and Interface Science
ISSN	0021-9797
卷号	310 期号:1 页码:90-98
摘要	The corrosion inhibition of mild steel in sulfuric acid by methionine (MTI) was investigated using electrochemical techniques. The effect of KI additives on corrosion inhibition efficiency was also studied. The results reveal that MTI inhibited the corrosion reaction by adsorption onto the metal/solution interface. Inhibition efficiency increased with MTI concentration and synergistically increased in the presence of KI, with an optimum [KI]/[MTI] ratio of 5/5, due to stabilization of adsorbed MTI cations as revealed by AFM surface morphological images. Potentiodynamic polarization data suggest that the compound functioned via a mixed-inhibition mechanism. This observation was further corroborated by the fit of the experimental adsorption data to the Temkin and Langmuir isotherms. The inhibition mechanism has been discussed vis-a-vis the presence of both nitrogen and sulfur atoms in the MTI molecule. (c) 2007 Elsevier Inc. All rights reserved.
部门归属	chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. fed univ technol owerri, electrochem & mat sci res lab, dept chem, owerri, nigeria.;oguzie, ee (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;oguziemeka@yahoo.com
关键词	Mild Steel Corrosion Inhibition Adsorption Amino Acid Iodide Ion Synergism Electrochemical Impedance Spectroscopy 1 m Hcl Amino-acids Halide-ions m H2so4 Copper Corrosion Phosphoric-acid Iron Media Dye
URL	查看原文
WOS记录号	WOS:000245967500010
引用统计	被引频次：422[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/321006/33767
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. Corrosion inhibition and adsorption behavior of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion[J]. Journal of Colloid and Interface Science,2007,310(1):90-98.
APA	E. E. Oguzie,Y. Li,&F. H. Wang.(2007).Corrosion inhibition and adsorption behavior of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion.Journal of Colloid and Interface Science,310(1),90-98.
MLA	E. E. Oguzie,et al."Corrosion inhibition and adsorption behavior of methionine on mild steel in sulfuric acid and synergistic effect of iodide ion".Journal of Colloid and Interface Science 310.1(2007):90-98.