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http://acervodigital.unesp.br/handle/11449/25446
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DC Field | Value | Language |
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dc.contributor.author | Cava, Sergio | - |
dc.contributor.author | Beninca, Renata | - |
dc.contributor.author | Tebcherani, Sergio M. | - |
dc.contributor.author | Souza, Iedo A. | - |
dc.contributor.author | Paskocimas, Carlos A. | - |
dc.contributor.author | Longo, Elson | - |
dc.contributor.author | Varela, José Arana | - |
dc.date.accessioned | 2014-05-20T14:18:05Z | - |
dc.date.accessioned | 2016-10-25T17:40:21Z | - |
dc.date.available | 2014-05-20T14:18:05Z | - |
dc.date.available | 2016-10-25T17:40:21Z | - |
dc.date.issued | 2007-07-01 | - |
dc.identifier | http://dx.doi.org/10.1007/s10971-007-1541-y | - |
dc.identifier.citation | Journal of Sol-gel Science and Technology. Dordrecht: Springer, v. 43, n. 1, p. 131-136, 2007. | - |
dc.identifier.issn | 0928-0707 | - |
dc.identifier.uri | http://hdl.handle.net/11449/25446 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/25446 | - |
dc.description.abstract | Al2O3 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.extent | 131-136 | - |
dc.language.iso | eng | - |
dc.publisher | Springer | - |
dc.source | Web of Science | - |
dc.subject | Al2O3 | pt |
dc.subject | Al2-xCrxO3 | pt |
dc.subject | phase transition | pt |
dc.subject | powder synthesis | pt |
dc.subject | spectroscopy | pt |
dc.subject | polymeric precursor method | pt |
dc.title | Structural and spectroscopic characterization of Al2-xCrxO3 powders obtained by polymeric precursor method | en |
dc.type | outro | - |
dc.contributor.institution | Univ Estadual Ponta Grossa | - |
dc.contributor.institution | Universidade Federal de Santa Catarina (UFSC) | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.contributor.institution | Universidade Federal do Rio Grande do Norte (UFRN) | - |
dc.description.affiliation | Univ Estadual Ponta Grossa, Ctr Interdisciplinar Pesquisa & Pos Graduacao, Lab Interdisciplinar Materiasis Ceram, BR-84035900 Ponta Grossa, Brazil | - |
dc.description.affiliation | Univ Fed Santa Catarina, Dept Engn Mecan, BR-88040900 Florianopolis, SC, Brazil | - |
dc.description.affiliation | Univ Estadual Paulista, Inst Quim, Dept Quim Fis, Lab Interdisciplinar Ceram, BR-14800900 Araraquara, SP, Brazil | - |
dc.description.affiliation | Univ Fed Rio Grande do Norte, Dept Engn Mecan, BR-59072970 Natal, RN, Brazil | - |
dc.description.affiliationUnesp | Univ Estadual Paulista, Inst Quim, Dept Quim Fis, Lab Interdisciplinar Ceram, BR-14800900 Araraquara, SP, Brazil | - |
dc.identifier.doi | 10.1007/s10971-007-1541-y | - |
dc.identifier.wos | WOS:000247194300019 | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Journal of Sol-Gel Science and Technology | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
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