EIS and potentiodynamic polarization studies on immiscible monotectic Al-In alloys

dc.creatorOsorio, WR
dc.creatorFreitas, ES
dc.creatorGarcia, A
dc.date2013
dc.date42186
dc.date2014-07-30T17:24:17Z
dc.date2015-11-26T16:45:22Z
dc.date2014-07-30T17:24:17Z
dc.date2015-11-26T16:45:22Z
dc.date.accessioned2018-03-28T23:30:56Z
dc.date.available2018-03-28T23:30:56Z
dc.identifierElectrochimica Acta. Pergamon-elsevier Science Ltd, v. 102, n. 436, n. 445, 2013.
dc.identifier0013-4686
dc.identifierWOS:000321481300056
dc.identifier10.1016/j.electacta.2013.04.047
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/65400
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/65400
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1274195
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionThe electrochemical behavior of monotectic Al-In alloys is experimentally investigated. Electrochemical impedance spectroscopy (EIS), potentiodynamic anodic polarization techniques and an equivalent circuit analysis were used to evaluate the corrosion response in a stagnant and naturally aerated 0.5 M NaCl solution at 25 degrees C. It was found that a better galvanic protection can be provided for microstructures having indium droplets of larger diameters and larger interphase spacings. From five samples extracted along the length of a directionally solidified Al-In casting, that having smallest interphase spacing (lambda = 18 pm) and droplet diameter (d = 0.7 mu m) had its corrosion resistance significantly decreased (about 2 and 3 times in terms of the current density and polarization resistance) when compared with that of the sample having the coarsest microstructure (lambda = 60 mu m and d = 2.5 mu m). Such behavior is attributed to both localized strains between aluminum and indium boundaries and the corrosion potential of the indium particles. (C) 2013 Elsevier Ltd. All rights reserved.
dc.description102
dc.description436
dc.description445
dc.descriptionFAEPEX-UNICAMP
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.languageen
dc.publisherPergamon-elsevier Science Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationElectrochimica Acta
dc.relationElectrochim. Acta
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectAl-In alloys
dc.subjectImmiscible alloys
dc.subjectSolidification
dc.subjectElectrochemical impedance spectroscopy
dc.subjectPolarization
dc.subjectElectrochemical Impedance Spectroscopy
dc.subjectCorrosion-resistance
dc.subjectNacl Solution
dc.subjectChloride Solutions
dc.subjectAluminum-alloys
dc.subjectBehavior
dc.subjectIndium
dc.subjectMicrostructure
dc.subjectSolidification
dc.subjectMacrosegregation
dc.titleEIS and potentiodynamic polarization studies on immiscible monotectic Al-In alloys
dc.typeArtículos de revistas


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