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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
Corresponding AuthorSu, JX(sujingxin@hotmail.com)
2005-09-01
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume41Issue:9Pages:974-978
AbstractElectrochemical 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.
KeywordAl-Li alloy electrochemical impedance spectroscopy (EIS) EXCO solution exfoliation corrosion
Indexed BySCI
Language英语
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000232503700014
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82562
Corresponding AuthorSu, JX
Affiliation1.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
Recommended Citation
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.
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