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

Página do item simplificado
dc.contributor.authorCava, S.
dc.contributor.authorTebcherani, S. M.
dc.contributor.authorSouza, I. A.
dc.contributor.authorPianaro, S. A.
dc.contributor.authorPaskocimas, C. A.
dc.contributor.authorLongo, Elson [UNESP]
dc.contributor.authorVarela, José Arana [UNESP]
dc.contributor.institutionUniv Estadual de Ponta Grossa
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Rio Grande do Norte (UFRN)
dc.date.accessioned2014-05-20T14:17:57Z
dc.date.available2014-05-20T14:17:57Z
dc.date.issued2007-06-15
dc.description.abstractNanocrystalline Al(2)O(3)powders 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 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. 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 gamma-Al2O3 to alpha-Al2O3 phase transition. (c) 2007 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Estadual de Ponta Grossa, Lab Interdisciplinar Mat Ceram, Ctr Interdisciplinar Pesquisa & Posgraduacao, BR-84035900 Ponta Grossa, PR, Brazil
dc.description.affiliationUniv Estadual Paulista, Lab Interdisciplinar Ceram, Dept Quim Fis, Inst Quim, Araraquara, SP, Brazil
dc.description.affiliationUniv Fed Rio Grande do Norte, Dept Eng Mecan, BR-59072970 Natal, RN, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Lab Interdisciplinar Ceram, Dept Quim Fis, Inst Quim, Araraquara, SP, Brazil
dc.format.extent394-399
dc.identifierhttp://dx.doi.org/10.1016/j.matchemphys.2007.02.046
dc.identifier.citationMaterials Chemistry and Physics. Lausanne: Elsevier B.V. Sa, v. 103, n. 2-3, p. 394-399, 2007.
dc.identifier.doi10.1016/j.matchemphys.2007.02.046
dc.identifier.issn0254-0584
dc.identifier.urihttp://hdl.handle.net/11449/25388
dc.identifier.wosWOS:000247715300032
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMaterials Chemistry and Physics
dc.relation.ispartofjcr2.210
dc.relation.ispartofsjr0,615
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectAl2O3pt
dc.subjectphase transitionpt
dc.subjectpolymeric precursor methodpt
dc.subjectnanopowderspt
dc.subjectmicro-Raman spectroscopypt
dc.subjectcrystallite sizept
dc.titleStructural characterization of phase transition of Al2O3 nanopowders obtained by polymeric precursor methoden
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt

Arquivos

Licença do Pacote

Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos - Físico Química - IQ