Electrophoretic deposition of ZrO2-Y2O3: A bi-component study concerning self-assemblies

dc.contributor.authorCASTRO, R. H. R.
dc.contributor.authorKODAMA, P. K.
dc.contributor.authorGOUVEA, D.
dc.contributor.authorMUCCILLO, R.
dc.date.accessioned2022-01-12T22:04:40Z
dc.date.available2022-01-12T22:04:40Z
dc.date.issued2009-01-05
dc.description.abstractThere are many industrial advantages of using mechanical multi-oxides mixtures to obtain ceramic parts by electrophoretic deposition (EPD). This is mainly because one could avoid complex chemical synthesis routes to achieve a desirable composition. However, EPD of these suspensions is not an easy task as well since many different surfaces are present, leading to unexpected suspension behavior. The particles surface potentials and interactions can, however, be predicted by an extension of the DLVO theory. Using this theory, one can control the suspension properties and particles distribution. The objective of this work was to apply the colloidal chemistry theories to promote the formation of a heterocoagulation between ZrO2 and Y2O3 particles in ethanol suspension to achieve a suitable condition for EPD. After identifying a condition where those particles had opposite surface charges and adequate relative sizes, heterocoagulation was observed at operational pH 7.5, generating an organized agglomerate with ZrO2 particles surrounding Y2O3, with a net zeta potential of -16.6 mV. Since the agglomerates were stable, EPD could be carried out and homogeneous deposits were obtained. The deposited bodies were sintered at 1600 °C for 4 h and partially stabilized ZrO2 could be obtained without traces of Y 2O3 second phases. © 2009 Springer Science+Business Media, LLC.
dc.description.firstpage1851
dc.description.issuenumber7
dc.description.lastpage1857
dc.description.volume44
dc.identifier.citationCASTRO, R. H. R.; KODAMA, P. K.; GOUVEA, D.; MUCCILLO, R. Electrophoretic deposition of ZrO2-Y2O3: A bi-component study concerning self-assemblies. Journal of Materials Science.
dc.identifier.doi10.1007/s10853-008-3240-7
dc.identifier.issn0022-2461
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4286
dc.relation.ispartofJournal of Materials Science
dc.rightsAcesso Restrito
dc.titleElectrophoretic deposition of ZrO2-Y2O3: A bi-component study concerning self-assemblies
dc.typeArtigo
fei.scopus.citations6
fei.scopus.eid2-s2.0-67349226837
fei.scopus.subjectChemical synthesis
fei.scopus.subjectColloidal chemistries
fei.scopus.subjectDLVO theories
fei.scopus.subjectElectro-phoretic depositions
fei.scopus.subjectHetero coagulations
fei.scopus.subjectParticles distributions
fei.scopus.subjectSelf- assemblies
fei.scopus.subjectSuspension properties
fei.scopus.updated2024-07-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=67349226837&origin=inward
Arquivos
Coleções