Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method

Detalhes bibliográficos
Autor(a) principal: Cava, Sérgio
Data de Publicação: 2007
Outros Autores: Tebcherani, Sérgio Mazurek, Souza, Iedo A., Pianaro, Sidnei Antônio, Paskocimas, Carlos Alberto, Silva, Elson Longo da, Varela, José A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRN
Texto Completo: https://repositorio.ufrn.br/handle/123456789/32253
Resumo: Nanocrystalline Al2O3powders have been synthesized by the polymeric precursor method. A study of the evolution of crystalline phases of obtained powders was accomplished through X-ray diffraction, micro-Raman spectroscopy and refinement of the structures through the Rietveld method. The results obtained allow the identification of three steps on the -Al2O3 to -Al2O3 phase transition. The single-phase -Al2O3 powder was obtained after heat-treatment at 1050 ◦ C for 2 h. A study of the morphology of the particles was accomplished through measures of crystallite size, specific surface area and transmission electronic microscopy. The particle size is closely related to -Al2O3 to -Al2O3 phase transition
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spelling Cava, SérgioTebcherani, Sérgio MazurekSouza, Iedo A.Pianaro, Sidnei AntônioPaskocimas, Carlos AlbertoSilva, Elson Longo daVarela, José A.2021-04-16T17:40:27Z2021-04-16T17:40:27Z2007-06-15CAVA, S.; TEBCHERANI, S.M.; SOUZA, I.A.; PIANARO, S.A.; PASKOCIMAS, C.A.; LONGO, E.; VARELA, J.A.. Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method. Materials Chemistry And Physics, [S.L.], v. 103, n. 2-3, p. 394-399, jun. 2007. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0254058407000995?via%3Dihub. Acesso em: 12 mar. 2021. http://dx.doi.org/10.1016/j.matchemphys.2007.02.046.0254-058410.1016/j.matchemphys.2007.02.046https://repositorio.ufrn.br/handle/123456789/32253ElsevierAttribution 3.0 Brazilhttp://creativecommons.org/licenses/by/3.0/br/info:eu-repo/semantics/openAccessAl2O3Phase transitionPolymeric precursor methodNanopowdersMicro-Raman spectroscopyCrystallite sizeStructural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor methodinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleNanocrystalline Al2O3powders have been synthesized by the polymeric precursor method. A study of the evolution of crystalline phases of obtained powders was accomplished through X-ray diffraction, micro-Raman spectroscopy and refinement of the structures through the Rietveld method. The results obtained allow the identification of three steps on the -Al2O3 to -Al2O3 phase transition. The single-phase -Al2O3 powder was obtained after heat-treatment at 1050 ◦ C for 2 h. A study of the morphology of the particles was accomplished through measures of crystallite size, specific surface area and transmission electronic microscopy. 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dc.title.pt_BR.fl_str_mv Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method
title Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method
spellingShingle Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method
Cava, Sérgio
Al2O3
Phase transition
Polymeric precursor method
Nanopowders
Micro-Raman spectroscopy
Crystallite size
title_short Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method
title_full Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method
title_fullStr Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method
title_full_unstemmed Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method
title_sort Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method
author Cava, Sérgio
author_facet Cava, Sérgio
Tebcherani, Sérgio Mazurek
Souza, Iedo A.
Pianaro, Sidnei Antônio
Paskocimas, Carlos Alberto
Silva, Elson Longo da
Varela, José A.
author_role author
author2 Tebcherani, Sérgio Mazurek
Souza, Iedo A.
Pianaro, Sidnei Antônio
Paskocimas, Carlos Alberto
Silva, Elson Longo da
Varela, José A.
author2_role author
author
author
author
author
author
dc.contributor.author.fl_str_mv Cava, Sérgio
Tebcherani, Sérgio Mazurek
Souza, Iedo A.
Pianaro, Sidnei Antônio
Paskocimas, Carlos Alberto
Silva, Elson Longo da
Varela, José A.
dc.subject.por.fl_str_mv Al2O3
Phase transition
Polymeric precursor method
Nanopowders
Micro-Raman spectroscopy
Crystallite size
topic Al2O3
Phase transition
Polymeric precursor method
Nanopowders
Micro-Raman spectroscopy
Crystallite size
description Nanocrystalline Al2O3powders have been synthesized by the polymeric precursor method. A study of the evolution of crystalline phases of obtained powders was accomplished through X-ray diffraction, micro-Raman spectroscopy and refinement of the structures through the Rietveld method. The results obtained allow the identification of three steps on the -Al2O3 to -Al2O3 phase transition. The single-phase -Al2O3 powder was obtained after heat-treatment at 1050 ◦ C for 2 h. A study of the morphology of the particles was accomplished through measures of crystallite size, specific surface area and transmission electronic microscopy. The particle size is closely related to -Al2O3 to -Al2O3 phase transition
publishDate 2007
dc.date.issued.fl_str_mv 2007-06-15
dc.date.accessioned.fl_str_mv 2021-04-16T17:40:27Z
dc.date.available.fl_str_mv 2021-04-16T17:40:27Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.citation.fl_str_mv CAVA, S.; TEBCHERANI, S.M.; SOUZA, I.A.; PIANARO, S.A.; PASKOCIMAS, C.A.; LONGO, E.; VARELA, J.A.. Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method. Materials Chemistry And Physics, [S.L.], v. 103, n. 2-3, p. 394-399, jun. 2007. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0254058407000995?via%3Dihub. Acesso em: 12 mar. 2021. http://dx.doi.org/10.1016/j.matchemphys.2007.02.046.
dc.identifier.uri.fl_str_mv https://repositorio.ufrn.br/handle/123456789/32253
dc.identifier.issn.none.fl_str_mv 0254-0584
10.1016/j.matchemphys.2007.02.046
identifier_str_mv CAVA, S.; TEBCHERANI, S.M.; SOUZA, I.A.; PIANARO, S.A.; PASKOCIMAS, C.A.; LONGO, E.; VARELA, J.A.. Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method. Materials Chemistry And Physics, [S.L.], v. 103, n. 2-3, p. 394-399, jun. 2007. Disponível em: https://www.sciencedirect.com/science/article/abs/pii/S0254058407000995?via%3Dihub. Acesso em: 12 mar. 2021. http://dx.doi.org/10.1016/j.matchemphys.2007.02.046.
0254-0584
10.1016/j.matchemphys.2007.02.046
url https://repositorio.ufrn.br/handle/123456789/32253
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dc.rights.driver.fl_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution 3.0 Brazil
http://creativecommons.org/licenses/by/3.0/br/
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