Corrosion resistance of directionally solidified Al-6Cu-1Si and Al-8Cu-3Si alloys castings

dc.creatorOsorio, WR
dc.creatorPeixoto, LC
dc.creatorMoutinho, DJ
dc.creatorGomes, LG
dc.creatorFerreira, IL
dc.creatorGarcia, A
dc.date2011
dc.dateAUG
dc.date2014-07-30T14:02:48Z
dc.date2015-11-26T17:37:18Z
dc.date2014-07-30T14:02:48Z
dc.date2015-11-26T17:37:18Z
dc.date.accessioned2018-03-29T00:18:58Z
dc.date.available2018-03-29T00:18:58Z
dc.identifierMaterials & Design. Elsevier Sci Ltd, v. 32, n. 7, n. 3832, n. 3837, 2011.
dc.identifier0261-3069
dc.identifierWOS:000291125100022
dc.identifier10.1016/j.matdes.2011.03.013
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/57302
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/57302
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1285923
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionThe aim of this article is to compare the electrochemical corrosion resistance of two as-cast Al-6 wt.% Cu-1 wt.% Si and Al-8 wt.% Cu-3 wt.% Si alloys considering both the solutes macrosegregation profiles and the scale of the microstructure dendritic arrays. A water-cooled unidirectional solidification system was used to obtain the as-cast samples. Electrochemical impedance spectroscopy (EIS) and potentiodynamic anodic polarization techniques were used to analyze the corrosion resistance in a 0.5 M NaCl solution at 25 degrees C. It was found that the Al-8Cu-3Si alloy has better electrochemical corrosion resistance than the Al-6Cu-1Si alloy for any position along the casting length. At the castings regions where the Cu inverse profile prevailed (up to about 10 mm from the castings surface) the corrosion current density decreased up to 2.5 times with the decrease in the secondary dendrite arm spacing. (C) 2011 Elsevier Ltd. All rights reserved.
dc.description32
dc.description7
dc.description3832
dc.description3837
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.publisherElsevier Sci Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationMaterials & Design
dc.relationMater. Des.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectNon-ferrous metals and alloys
dc.subjectCasting
dc.subjectCorrosion
dc.subjectUnsteady-state Solidification
dc.subjectAl-cu Alloys
dc.subjectMechanical-properties
dc.subjectElectrochemical-behavior
dc.subjectIntermetallic Phases
dc.subjectDendrite Spacings
dc.subjectAluminum-alloys
dc.subjectSilicon Content
dc.subjectSi Alloy
dc.subjectParameters
dc.titleCorrosion resistance of directionally solidified Al-6Cu-1Si and Al-8Cu-3Si alloys castings
dc.typeArtículos de revistas


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