Localized corrosion behavior of scratches on nickel-base Alloy 690TT

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	Localized corrosion behavior of scratches on nickel-base Alloy 690TT
	F. J. Meng ; E. H. Han ; J. Q. Wang ; Z. M. Zhang ; W. Me
刊名	Electrochimica Acta
	2011
卷号	56 期号:4 页码:1781-1785
关键词	Scratch Localized corrosion SECM Crack initiation Alloy 690 scanning electrochemical microscopy oxidation cracking water
ISSN号	0013-4686
中文摘要	Localized corrosion of scratched Alloy 690TT was studied using scanning electrochemical microscopy (SECM) in 10 wt.% NaOH solution and atomic force microscopy (AFM) after short-time oxidation tests in high temperature high pressure water at 250 degrees C. The results show that the scratches detected by SECM displayed more extensive electrochemical activity. The scratch groove and the whole deformed region caused by scratching as anode corresponded to the peak of tip current. The oxides formed in 250 degrees C high purity pressurized water nucleated preferentially at the scratch groove and grew faster than non-scratched surface. The nano-grained scratch groove has more electrochemical reactivity than mechanical twins at scratch banks. The intense localized corrosion could contribute to crack initiation at the bottom of scratch groove. (C) 2010 Elsevier Ltd. All rights reserved.
原文出处	://WOS:000287951600012
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/30589]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	F. J. Meng,E. H. Han,J. Q. Wang,et al. Localized corrosion behavior of scratches on nickel-base Alloy 690TT[J]. Electrochimica Acta,2011,56(4):1781-1785.
APA	F. J. Meng,E. H. Han,J. Q. Wang,Z. M. Zhang,&W. Me.(2011).Localized corrosion behavior of scratches on nickel-base Alloy 690TT.Electrochimica Acta,56(4),1781-1785.
MLA	F. J. Meng,et al."Localized corrosion behavior of scratches on nickel-base Alloy 690TT".Electrochimica Acta 56.4(2011):1781-1785.