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dc.contributor.authorSouto, Ricardo Manuel 
dc.contributor.authorIzquierdo Pérez, Javier 
dc.contributor.authorNagy, Lívia
dc.contributor.authorVarga, Ágnes
dc.contributor.authorBitter, István
dc.contributor.authorNagy, Géza
dc.date.accessioned2020-03-31T06:05:54Z
dc.date.available2020-03-31T06:05:54Z
dc.date.issued2011
dc.identifier.urihttp://riull.ull.es/xmlui/handle/915/19168
dc.description.abstractIon-selective microelectrodes can be employed as tips in scanning electrochemical microscopy (SECM) for chemical imaging of corrosion processes. They present higher chemical selectivity than conventional amperometric microdisks, and may be the only effective option to visualize the dissolution of metals with negative redox potentials in aqueous environments when the use of Pt microelectrodes is limited by the onset of oxygen reduction and hydrogen evolution reactions. A robust micro-sized ion selective electrode has been developed which allows the spatial distribution of Zn2+ during galvanic corrosion of a model Fe/Zn couple to be investigated using SECM. Owing to the low internal contact potential and smaller membrane thickness achieved with the novel design, the resistance of the micropipette electrodes is only fractions of the resistance of conventional micropipette electrodes of the same size. As a result, no special shielding of the microelectrodes is required and higher scanning rate can be used for scanning in the potentiometric modes using these micropipette tips. Concentration profiles over corroding surfaces measured with this technique will be presenteden
dc.format.mimetypeapplication/pdf
dc.language.isoen
dc.relation.ispartofseriesElectrochimica Acta, 59, 398-403 (2011)
dc.rightsLicencia Creative Commons (Reconocimiento-No comercial-Sin obras derivadas 4.0 Internacional)
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es_ES
dc.titleScanning electrochemical microscopy for the investigation of corrosion processes: measurement of Zn2+ spatial distribution with ion selective microelectrodes.en
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1016/j.electacta.2011.10.076
dc.subject.keywordscanning electrochemical microscopyen
dc.subject.keywordpotentiometric operationen
dc.subject.keywordion selective microelectrodeen
dc.subject.keywordzincen
dc.subject.keywordgalvanic corrosionen


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