Mechanistic studies of atmospheric pitting corrosion of stainless steel for ILW containers

被引：23

作者：

Davenport, A. J. ^{[1
]}

Guo, L. ^{[1
]}

Mi, N. ^{[1
]}

Mohammed-Ali, H. ^{[1
]}

Ghahari, M. ^{[1
]}

Street, S. R. ^{[1
]}

Laycock, N. J. ^{[1
]}

Rayment, T. ^{[2
]}

Reinhard, C. ^{[2
]}

Padovani, C. ^{[3
]}

Krouse, D. ^{[4
]}

机构：

[1] Univ Birmingham, Sch Met & Mat Edgbaston, Birmingham B15 2TT, W Midlands, England

[2] Diamond Light Source, Didcot OX11 0DE, Oxon, England

[3] Radioact Waste Management Ltd, Nucl Decommissioning Author Radioact Waste Manag, Oxford, England

[4] Callaghan Innovat, Lower Hutt, Wellington, New Zealand

来源：

CORROSION ENGINEERING SCIENCE AND TECHNOLOGY | 2014年 / 49卷 / 06期

基金：

英国工程与自然科学研究理事会;

关键词：

Atmospheric pitting corrosion; Stainless steel; X-ray microtomography; PIT PROPAGATION; 304-STAINLESS-STEEL;

D O I：

10.1179/1743278214Y.0000000183

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Atmospheric pitting corrosion of stainless steel was examined with synchrotron X-ray microtomography, laboratory based tests and electrochemical measurements in order to provide a mechanistic basis for the development of corrosion prediction models. It was found that the morphology of corrosion pits was affected by the presence of residual ferrite, and some pits showed dense covers that may affect pit stability. Fluctuations in relative humidity may lead to partial or complete repassivation of pits, sometimes leading to the formation of new pits. Electrochemical measurements in artificial pits containing concentrated salt solutions show a strong dependence of the diffusion limited current density on chloride concentration.

引用

页码：514 / 520

页数：7

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