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Structural features of phosphate and sulfate modified zirconia prepared by sol-gel route

dc.contributor.authorKawaguti, C. A.
dc.contributor.authorChiavacci, L. A.
dc.contributor.authorPulcinelli, Sandra Helena [UNESP]
dc.contributor.authorSantilli, Celso Valentim [UNESP]
dc.contributor.authorBriois, V
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Paris 11
dc.date.accessioned2014-05-20T15:25:49Z
dc.date.available2014-05-20T15:25:49Z
dc.date.issued2004-10-01
dc.description.abstractThis paper describes the effect of sulfate, phosphate and nitrate complexing ligands on the structural features of amorphous xerogels and on the crystallization of metastable zirconia phases during the xerogel-ceramic conversion. Powdered samples were prepared by a sol-gel route using zirconyl chloride precursors chemically modified by complexing ligands. The structural evolution of ZrO2 phases as function of firing temperature was analyzed by XRPD, EXAFS and P-13 NMR/MAS. The experimental results show the formation of metastable t-ZrO2 during the low firing temperature of xerogels modified by sulfate or phosphate groups. The martensitic tetragonal-monoclinic transformation occurs during desorption of sulfate groups. The largest temperature interval of stability of metastable tetragonal zirconia was observed for phosphate-modified xerogels.en
dc.description.affiliationUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.description.affiliationUniv Paris 11, LURE, F-91898 Orsay, France
dc.description.affiliationUnespUNESP, Inst Quim, BR-14801970 Araraquara, SP, Brazil
dc.format.extent91-97
dc.identifierhttp://dx.doi.org/10.1007/s10971-004-5771-y
dc.identifier.citationJournal of Sol-gel Science and Technology. Dordrecht: Springer, v. 32, n. 1-3, p. 91-97, 2004.
dc.identifier.doi10.1007/s10971-004-5771-y
dc.identifier.issn0928-0707
dc.identifier.lattes9971202585286967
dc.identifier.lattes5584298681870865
dc.identifier.orcid0000-0002-8356-8093
dc.identifier.urihttp://hdl.handle.net/11449/36160
dc.identifier.wosWOS:000228103300016
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal of Sol-Gel Science and Technology
dc.relation.ispartofjcr1.745
dc.relation.ispartofsjr0,477
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subjectsol-gel processpt
dc.subjectzirconia tetragonal phasept
dc.titleStructural features of phosphate and sulfate modified zirconia prepared by sol-gel routeen
dc.typeArtigopt
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.author.lattes9971202585286967
unesp.author.lattes5584298681870865[4]
unesp.author.orcid0000-0002-8356-8093[4]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentFísico-Química - IQARpt

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