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dc.contributor.authorCava, Sergio-
dc.contributor.authorBeninca, Renata-
dc.contributor.authorTebcherani, Sergio M.-
dc.contributor.authorSouza, Iedo A.-
dc.contributor.authorPaskocimas, Carlos A.-
dc.contributor.authorLongo, Elson-
dc.contributor.authorVarela, José Arana-
dc.date.accessioned2014-05-20T14:18:05Z-
dc.date.accessioned2016-10-25T17:40:21Z-
dc.date.available2014-05-20T14:18:05Z-
dc.date.available2016-10-25T17:40:21Z-
dc.date.issued2007-07-01-
dc.identifierhttp://dx.doi.org/10.1007/s10971-007-1541-y-
dc.identifier.citationJournal of Sol-gel Science and Technology. Dordrecht: Springer, v. 43, n. 1, p. 131-136, 2007.-
dc.identifier.issn0928-0707-
dc.identifier.urihttp://hdl.handle.net/11449/25446-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/25446-
dc.description.abstractAl2O3 and Al2-x Cr (x) O-3 (x = 0.01, 0.02 and 0.04) powders have been synthesized by the polymeric precursors method. A study of the structural evolution of crystalline phases corresponding to the obtained powders was accomplished through X-Ray Diffraction and UV-vis spectroscopy (reflectance spectra and CIEL* a*b* color data). The obtained results allow to identify the gamma-Al2O3 to alpha-Al2O3 phase transition. The single-phase alpha-Al2O3 powder was obtained after heat treatment at 1050 degrees C for 2 h. The results show that the green to red color transition and ruby luminescence lines observed for the powders of Al2-x Cr (x) O-3 are related to the gamma to alpha-Al2O3 phase transition and the temperature and time range for such transition depends on the chromium content.en
dc.format.extent131-136-
dc.language.isoeng-
dc.publisherSpringer-
dc.sourceWeb of Science-
dc.subjectAl2O3pt
dc.subjectAl2-xCrxO3pt
dc.subjectphase transitionpt
dc.subjectpowder synthesispt
dc.subjectspectroscopypt
dc.subjectpolymeric precursor methodpt
dc.titleStructural and spectroscopic characterization of Al2-xCrxO3 powders obtained by polymeric precursor methoden
dc.typeoutro-
dc.contributor.institutionUniv Estadual Ponta Grossa-
dc.contributor.institutionUniversidade Federal de Santa Catarina (UFSC)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniversidade Federal do Rio Grande do Norte (UFRN)-
dc.description.affiliationUniv Estadual Ponta Grossa, Ctr Interdisciplinar Pesquisa & Pos Graduacao, Lab Interdisciplinar Materiasis Ceram, BR-84035900 Ponta Grossa, Brazil-
dc.description.affiliationUniv Fed Santa Catarina, Dept Engn Mecan, BR-88040900 Florianopolis, SC, Brazil-
dc.description.affiliationUniv Estadual Paulista, Inst Quim, Dept Quim Fis, Lab Interdisciplinar Ceram, BR-14800900 Araraquara, SP, Brazil-
dc.description.affiliationUniv Fed Rio Grande do Norte, Dept Engn Mecan, BR-59072970 Natal, RN, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Quim, Dept Quim Fis, Lab Interdisciplinar Ceram, BR-14800900 Araraquara, SP, Brazil-
dc.identifier.doi10.1007/s10971-007-1541-y-
dc.identifier.wosWOS:000247194300019-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Sol-Gel Science and Technology-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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