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dc.contributor.authorDe Marco, Roland
dc.contributor.authorJiang, Zhong-Tao
dc.contributor.authorPejcic, Bobby
dc.contributor.authorPoinen, Eddy
dc.identifier.citationDe Marco, Roland and Jiang, Zhong-Tao and Bobby, Pejcic and Poinen, Eddy. 2005. An In Situ Synchrotron Radiation Grazing Incidence X-Ray Diffraction Study of Carbon Dioxide Corrosion. Journal of the Electrochemical Society 152 (10): B389-B392.

An in situ surface study of the carbon dioxide corrosion of mild steel has been undertaken using the tandem technique of mixed potential/synchrotron radiation-grazing incidence X-ray diffraction (SR-GIXRD). Long-term monitoring of the mixed potential showed there was an initial shift toward cathodic potentials attributable to preferential suppression of the cathodic half-reaction (viz., the reduction of carbonic acid), probably due to the formation of an adlayer of corrosion product physically blocking the cathodic reaction sites during the uniform corrosion of mild steel. Subsequently, the mixed potential displayed a gradual shift to anodic potentials, symbolizing the preferential suppression of the anodic half-reaction as the primary corrosion products [viz., Fe2(OH)2CO3, Fe2O2(CO3), Fe6(OH)12(CO3), and Fe6(OH)12(CO3).2H2O] acquired a sufficient thickness to physically block the interface against further corrosion. Nevertheless, the corrosion product continues to grow over time, indicating that the corrosion product is discontinuous and porous, allowing the ingression of electrolyte to enable the further corrosion of the mild steel. This research has important ramifications for the field of corrosion research; it should enable researchers to develop improved methods of chemical inhibition by using compounds that can actually bind to the newly postulated corrosion products on mild steel.

dc.publisherThe Electrochemical Society, Inc
dc.titleAn In Situ Synchrotron Radiation Grazing Incidence X-Ray Diffraction Study of Carbon Dioxide Corrosion
dc.typeJournal Article
dcterms.source.titleJournal of the Electrochemical Society

Copyright 2005, The Electrochemical Society.


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curtin.facultyDepartment of Applied Chemistry
curtin.facultyDivision of Engineering, Science and Computing
curtin.facultyFaculty of Science

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