Exfoliation corrosion behavior of T6 treated 2090 Al-Li alloy in EXCO solution, and EIS during exfoliation corrosion evolution

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	Exfoliation corrosion behavior of T6 treated 2090 Al-Li alloy in EXCO solution, and EIS during exfoliation corrosion evolution
	Su, JX ; Zhang, Z ; Cao, FH ; Zhang, JQ ; Cao, CN
刊名	ACTA METALLURGICA SINICA
	2005-09-01
卷号	41 期号:9 页码:974-978
关键词	Al-Li alloy electrochemical impedance spectroscopy (EIS) EXCO solution exfoliation corrosion
ISSN号	0412-1961
通讯作者	Su, JX(sujingxin@hotmail.com)
英文摘要	Electrochemical impedance spectroscopy (EIS) and in situ microscopic image of T6 peak-aged AA2090 Al-Li alloys in EXCO solution were studied. The localized corrosion form of the alloy during immersion evolved from pitting through intergranular corrosion, exfoliation corrosion (EC) to post EC. EC initiated at big corrosion pits which were formed with inclusion phase as center in pitting stage. The EC blisters propagate from these big pits till the upper layer is totally lifted. EIS of the initiation stage of pitting corrosion consists of a high frequency capacitive arc and a middle-low frequency inductive arc, and the inductive arc tends to disappear when pitting corrosion starts to propagate. In the intergranular corrosion stage, the second time constant corresponding to the corroded area can hardly be distinguished in the capacitive part of the EIS. In the stages of EC propagation and post EC, their EIS consist of two capacitive arcs.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000232503700014
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/82560]
专题	金属研究所_中国科学院金属研究所
通讯作者	Su, JX
作者单位	1.Zhejiang Univ, Dept Chem, Hangzhou 310027, Peoples R China 2.Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Su, JX,Zhang, Z,Cao, FH,et al. Exfoliation corrosion behavior of T6 treated 2090 Al-Li alloy in EXCO solution, and EIS during exfoliation corrosion evolution[J]. ACTA METALLURGICA SINICA,2005,41(9):974-978.
APA	Su, JX,Zhang, Z,Cao, FH,Zhang, JQ,&Cao, CN.(2005).Exfoliation corrosion behavior of T6 treated 2090 Al-Li alloy in EXCO solution, and EIS during exfoliation corrosion evolution.ACTA METALLURGICA SINICA,41(9),974-978.
MLA	Su, JX,et al."Exfoliation corrosion behavior of T6 treated 2090 Al-Li alloy in EXCO solution, and EIS during exfoliation corrosion evolution".ACTA METALLURGICA SINICA 41.9(2005):974-978.