Effect of surface nanocrystallization on corrosion and corrosion inhibition of low carbon steel: Synergistic effect of methionine and iodide ion

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	Effect of surface nanocrystallization on corrosion and corrosion inhibition of low carbon steel: Synergistic effect of methionine and iodide ion
	E. E. Oguzie; Y. Li; F. H. Wang
	2007
发表期刊	Electrochimica Acta
ISSN	0013-4686
卷号	52 期号:24 页码:6988-6996
摘要	The corrosion properties of a nanocrystalline low carbon steel coating (SNCLCS) fabricated on a low carbon steel substrate by magnetron sputtering and the bulk steel (BLCS) were investigated in aerated 0.5M H2SO4 solution by EIS and polarization techniques. The corrosion inhibiting effect of methionine and synergistic KI additives was also studied. The results show that both specimens underwent active corrosion with no transition to passivation in the potential range studied. Sur-face nanocrystallization was observed to increase the corrosion susceptibility of low carbon steel, leading to a decrease in interfacial impedance and an increase in the kinetics of the anodic reaction. Methionine inhibited the corrosion of both specimens with comparable inhibition efficiencies and iodide ions synergistically increased the inhibition efficiency. This synergistic effect was, however, more pronounced for BLCS. This has been discussed vis- -vis the more positive surface charge on BLCS compared to SNCLCS. (c) 2007 Elsevier Ltd. 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, dept chem, electrochem & mat sci res lab, owerri 1526, nigeria.;li, y (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china;liying@imr.ac.cn
关键词	Corrosion Steel Nanocrystallization Corrosion Inhibition Synergism Electrochemical Impedance Spectroscopy Acidic Sulfate-solution Congo Red-dye Mild-steel Sulfuric-acid Stainless-steel Grain-size Ingot Iron Behavior Nickel
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WOS记录号	WOS:000248783300051
引用统计	被引频次：104[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/321006/33766
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 surface nanocrystallization on corrosion and corrosion inhibition of low carbon steel: Synergistic effect of methionine and iodide ion[J]. Electrochimica Acta,2007,52(24):6988-6996.
APA	E. E. Oguzie,Y. Li,&F. H. Wang.(2007).Effect of surface nanocrystallization on corrosion and corrosion inhibition of low carbon steel: Synergistic effect of methionine and iodide ion.Electrochimica Acta,52(24),6988-6996.
MLA	E. E. Oguzie,et al."Effect of surface nanocrystallization on corrosion and corrosion inhibition of low carbon steel: Synergistic effect of methionine and iodide ion".Electrochimica Acta 52.24(2007):6988-6996.