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Influence of mechanical stress on the potential distribution on a 301 LN stainless steel surface
RISE, Swerea, Swerea KIMAB.
French Corrosion Institute.
French Corrosion Institute.
Jernkontoret.
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2015 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, E-ISSN 1945-7111, Vol. 162, no 9, C465-C472 p.Article in journal (Refereed)
Abstract [en]

The aim of the present work was to study the influence of the stress on the electrode potential of the austenitic stainless steel 301LN using Scanning Kelvin Probe (SKP). It was found that elastic deformation reversibly ennobles the potential whereas plastic deformation decreases the potential in both tensile and compressive deformation mode and this decrease is retained even 24 h after removal of the load. To interpret the stress effects, different surface preparations were used and the composition and thickness of the passive film were determined by GDOES. Slip steps formed due to plastic deformation were observed using AFM. The effect of plastic strain on the potential is explained by the formation of dislocations, which creates more a defective passive film. © The Author(s) 2015. Published by ECS.

Place, publisher, year, edition, pages
2015. Vol. 162, no 9, C465-C472 p.
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:ri:diva-12776DOI: 10.1149/2.0511509jesScopus ID: 2-s2.0-84937036307OAI: oai:DiVA.org:ri-12776DiVA: diva2:972969
Available from: 2016-09-22 Created: 2016-09-22Bibliographically approved

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