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In Situ Observation of Surface Electrochemical Activities of Lean Duplex Stainless Steel LDX 2101
X. Y. Li; L. F. Guo; D. Han; J. Li; Y. M. Jiang
2013
Source PublicationSteel Research International
ISSN1611-3683
Volume84Issue:2Pages:155-162
AbstractThe surface electrochemical corrosion activity of the economic lean duplex stainless steel LDX2101 was investigated in situ in chloride solution with a combination of long working distance microscope (LWDM) and electrochemical techniques. In addition, the site and chemical composition of the electrochemical active points on the specimen surface were also determined with integrated scanning electron microscope/energy dispersive X-ray spectroscope (SEM/EDS) system. The results demonstrated that: (i) The reaction of alpha -> Cr2N + gamma 2 precedes that of alpha -> sigma + gamma 2 when LDX2101 was aged at 700 degrees C. (ii) The initiation sites of electrochemical active points could be determined by LWDM in combination with potentiostatic pulse technique (PPT). (iii) The sites of electrochemical active points were found to change from inclusions (MnS/Al2O3) to secondary austenite phase (gamma 2), with the increase of aging time at 700 degrees C.
description.department[li, xuyan ; guo, lifang ; han, dong ; li, jin ; jiang, yiming] fudan univ, dept mat sci, shanghai 200433, peoples r china. [li, jin] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; li, xy (reprint author), fudan univ, dept mat sci, shanghai 200433, peoples r china. ; ymjiang@fudan.edu.cn
KeywordLean Duplex Stainless Steel Ldx2101 Long Working Distance Microscope Electrochemical Technique Electrochemical Active Points Pitting Corrosion Mns Inclusions Saf-2507 Behavior Energy
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71340
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
X. Y. Li,L. F. Guo,D. Han,et al. In Situ Observation of Surface Electrochemical Activities of Lean Duplex Stainless Steel LDX 2101[J]. Steel Research International,2013,84(2):155-162.
APA X. Y. Li,L. F. Guo,D. Han,J. Li,&Y. M. Jiang.(2013).In Situ Observation of Surface Electrochemical Activities of Lean Duplex Stainless Steel LDX 2101.Steel Research International,84(2),155-162.
MLA X. Y. Li,et al."In Situ Observation of Surface Electrochemical Activities of Lean Duplex Stainless Steel LDX 2101".Steel Research International 84.2(2013):155-162.
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