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In situ studies of sulfate nest formation on iron
KTH, Superseded Departments, Materials Science and Engineering.ORCID iD: 0000-0003-1631-4293
KTH, Superseded Departments, Materials Science and Engineering.ORCID iD: 0000-0002-9453-1333
2004 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, Vol. 151, no 9, B497-B504 p.Article in journal (Refereed) Published
Abstract [en]

Initial SO2-induced atmospheric corrosion of iron has been followed in situ by three highly surface sensitive and complementary techniques, infrared reflection absorption spectroscopy, quartz crystal microbalance, and atomic force microscopy. The resulting corrosion attack was local in nature and resembled what are called sulfate nests, frequently observed on steel naturally exposed outdoors. The conclusions drawn challenge the established model for the formation and growth of sulfate nests: SO2 alone in humid air is not a sufficient prerequisite for sulfate nest formation. Only when an oxidant such as NO2 or O-3 is added to the corrosive atmosphere, can sulfate nests be detected. The conditions and formation of sulfate nests and other forms of local corrosion attacks are discussed in view of all in situ observations generated.

Place, publisher, year, edition, pages
2004. Vol. 151, no 9, B497-B504 p.
Keyword [en]
initial atmospheric corrosion, reflection-absorption spectroscopy, sulfur-dioxide, filiform corrosion, oxide-films, surfaces, copper, adsorption, humidity, steel
National Category
Materials Engineering
URN: urn:nbn:se:kth:diva-23694DOI: 10.1149/1.1775911ISI: 000223622000034ScopusID: 2-s2.0-4944261326OAI: diva2:342393
QC 20100525 QC 20111101Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2011-11-01Bibliographically approved

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Weissenrieder, JonasLeygraf, Christofer
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