High sinterability of Ca-PZT, synthesized by polymeric and partial oxalate process

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dc.contributor.authorNasar, R. S.
dc.contributor.authorCerqueira, M.
dc.contributor.authorDuboc, N.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniversidade Federal do Rio Grande do Norte (UFRN)
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:30:05Z
dc.date.available2014-05-20T15:30:05Z
dc.date.issued2001-02-01
dc.description.abstractThis study includes Ca-PZT in the morphotropic phase boundary, MPB process combining the Pechini method, (ZT) and the Partial oxalate method (Ca-PZT) by obtaining single phase particles of ZT phase with a high specific surface area (similar to 110 m(2)/g at 550 degrees C) and narrow particle size distribution. Lead and calcium oxalates were precipitated onto the ZT particle surface and reacted to a solid state interface ZT/Ca-PZT/PbO-CaO. A deviation of a coexistence region from F-T- and F-R-phases to F-R-phase (Zr rich region) was observed. Strong surface area reduction occurs by Ca-PZT crystallization at about 700 degreesC, and demonstrated high sinterability (2.40 m(2)/g - 350 nm) with apparent densities near to 99.9%. Different processing methods did not demonstrate superior results. Studies of calcined powder shows a high sinterability of powder calcined 3 h at 700 degrees C and sintered 3 h at 1000 degreesC coming up to 99.8% of relative density. (C) 2001 Kluwer Academic Publishers.en
dc.description.affiliationUFRN, Dept Quim, BR-59078970 Natal, RN, Brazil
dc.description.affiliationUFSCar, Dept Quim, BR-13565905 Sao Carlos, SP, Brazil
dc.description.affiliationUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.description.affiliationUnespUNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil
dc.format.extent1001-1006
dc.identifierhttp://dx.doi.org/10.1023/A:1004840326765
dc.identifier.citationJournal of Materials Science. Dordrecht: Kluwer Academic Publ, v. 36, n. 4, p. 1001-1006, 2001.
dc.identifier.doi10.1023/A:1004840326765
dc.identifier.issn0022-2461
dc.identifier.urihttp://hdl.handle.net/11449/39539
dc.identifier.wosWOS:000166860400032
dc.language.isoeng
dc.publisherKluwer Academic Publ
dc.relation.ispartofJournal of Materials Science
dc.relation.ispartofjcr2.993
dc.relation.ispartofsjr0,807
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleHigh sinterability of Ca-PZT, synthesized by polymeric and partial oxalate processen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dcterms.rightsHolderKluwer Academic Publ
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

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