dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-27T11:27:19Z
dc.date.available2014-05-27T11:27:19Z
dc.date.created2014-05-27T11:27:19Z
dc.date.issued2012-12-01
dc.identifierECS Transactions, v. 43, n. 1, p. 199-202, 2012.
dc.identifier1938-5862
dc.identifier1938-6737
dc.identifierhttp://hdl.handle.net/11449/73847
dc.identifier10.1149/1.4704958
dc.identifier2-s2.0-84879425457
dc.description.abstractThe purpose of this study is to characterize the corrosion product on the surface of silver, employing H2SO4 (0.5M) as electrolyte. The electrochemical parameters, Ecor, Icor, V cor and Rp were obtained after analyzing the potentiodynamic polarization curve in which two peaks were observed. The smallest (passive region) is attributed to the Cl- traces from the reference electrode, with micro-cracks. The second peak (in the transpassivation region) corresponds to the polarization curve of silver in H2SO 4 without contaminants. SEM images and EDS analysis reveal images of a surface layer on silver, consisting of structures containing sulfur, oxygen, silver and chloride, as the corrosion product. On this layer silver sulfate crystals were observed, which occurs during the formation of silver chloride nanocrystals with different morphologies, when chloride ions were added to the electrolyte medium. ©The Electrochemical Society.
dc.languageeng
dc.relationECS Transactions
dc.relation0,225
dc.relation0,225
dc.rightsAcesso aberto
dc.sourceScopus
dc.subjectCorrosion products
dc.subjectElectrochemical parameters
dc.subjectPolarization curves
dc.subjectPotentiodynamic polarization curves
dc.subjectReference electrodes
dc.subjectSilver chlorides
dc.subjectSurface layers
dc.subjectTranspassivation
dc.subjectChlorine compounds
dc.subjectCorrosion
dc.subjectElectrochemistry
dc.subjectElectrolytes
dc.subjectNanocrystals
dc.subjectSilver halides
dc.subjectSilver
dc.titleFormation of silver chloride nanocrystals as a corrosion product of silver in H2SO4 solution
dc.typeActas de congresos


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