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

Cava, Sérgio; Tebcherani, Sérgio Mazurek; Souza, Iedo A.; Pianaro, Sidnei Antônio; Paskocimas, Carlos Alberto; Silva, Elson Longo da; Varela, José A.

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

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dc.contributor.author	Cava, Sérgio
dc.contributor.author	Tebcherani, Sérgio Mazurek
dc.contributor.author	Souza, Iedo A.
dc.contributor.author	Pianaro, Sidnei Antônio
dc.contributor.author	Paskocimas, Carlos Alberto
dc.contributor.author	Silva, Elson Longo da
dc.contributor.author	Varela, José A.
dc.date.accessioned	2021-04-16T17:40:27Z
dc.date.available	2021-04-16T17:40:27Z
dc.date.issued	2007-06-15
dc.description.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	pt_BR
dc.identifier.citation	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.	pt_BR
dc.identifier.issn	0254-0584
dc.identifier.issn	10.1016/j.matchemphys.2007.02.046
dc.identifier.uri	https://repositorio.ufrn.br/handle/123456789/32253
dc.language	en	pt_BR
dc.publisher	Elsevier	pt_BR
dc.rights	Attribution 3.0 Brazil	*
dc.rights.uri	http://creativecommons.org/licenses/by/3.0/br/	*
dc.subject	Al2O3	pt_BR
dc.subject	Phase transition	pt_BR
dc.subject	Polymeric precursor method	pt_BR
dc.subject	Nanopowders	pt_BR
dc.subject	Micro-Raman spectroscopy	pt_BR
dc.subject	Crystallite size	pt_BR
dc.title	Structural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor method	pt_BR
dc.type	article	pt_BR