The role of macrostructural and microstructural morphologies on the corrosion resistance of Zn and a Zn-4% Al alloy

dc.creatorOsorio, WR
dc.creatorSpinelli, JE
dc.creatorFreire, CM
dc.creatorGarcia, A
dc.date2007
dc.date2014-07-30T19:00:18Z
dc.date2015-11-26T17:50:13Z
dc.date2014-07-30T19:00:18Z
dc.date2015-11-26T17:50:13Z
dc.date.accessioned2018-03-29T00:33:24Z
dc.date.available2018-03-29T00:33:24Z
dc.identifierMaterials And Manufacturing Processes. Taylor & Francis Inc, v. 22, n. 3, n. 341, n. 345, 2007.
dc.identifier1042-6914
dc.identifierWOS:000246518500012
dc.identifier10.1080/10426910701190386
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/72385
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/72385
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1289613
dc.descriptionDifferent structural morphologies may develop due to a wide range of the operational conditions that may exist during casting. It is well known that corrosion resistance and mechanical properties depend on solidi. cation structures. The aim of this study is to investigate both the influence of columnar and equiaxed structures of zinc as-cast samples and of dendritic microstructural array of a Zn-Al alloy on the corrosion resistance. In order to obtain columnar and equiaxed structures, both a vertical upward solidi. cation apparatus and a permanent steel mold casting assembly were used. The corrosion resistance was analyzed using electrochemical impedance spectroscopy and Tafel extrapolation. Corrosion tests were conducted in a 3% (vol.) NaCl solution at room temperature. It was found that coarser macrostructures tend to provide higher corrosion resistance for both columnar and equiaxed morphologies. On the other hand, finer secondary dendrite arm spacing is conducive to a better corrosion behavior of a Zn-4% Al alloy.
dc.description22
dc.description3
dc.description341
dc.description345
dc.languageen
dc.publisherTaylor & Francis Inc
dc.publisherPhiladelphia
dc.publisherEUA
dc.relationMaterials And Manufacturing Processes
dc.relationMater. Manuf. Process.
dc.rightsfechado
dc.rightshttp://journalauthors.tandf.co.uk/permissions/reusingOwnWork.asp
dc.sourceWeb of Science
dc.subjectchill mold
dc.subjectcolumnar grains
dc.subjectcorrosion resistance
dc.subjectcorrosion tests
dc.subjectelectrochemical impedance spectroscopy ( EIS)
dc.subjectequiaxed grains
dc.subjectgrain size
dc.subjectmacromorphology
dc.subjectmicromorphology
dc.subjectpolarization tests
dc.subjectsecondary dendrite arm spacing
dc.subjectunidirectional solidification
dc.subjectwater-cooled mold
dc.subjectzinc
dc.subjectZn-Al alloys
dc.subjectMechanical-properties
dc.subjectThermal Parameters
dc.subjectCastings
dc.titleThe role of macrostructural and microstructural morphologies on the corrosion resistance of Zn and a Zn-4% Al alloy
dc.typeArtículos de revistas


Este ítem pertenece a la siguiente institución