Avrami exponent of crystallization in tellurite glasses

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dc.contributor.authorSidel, S. M. [UNESP]
dc.contributor.authorSantos, F. A. [UNESP]
dc.contributor.authorGordo, V. O. [UNESP]
dc.contributor.authorIdalgo, E. [UNESP]
dc.contributor.authorMonteiro, A. A. [UNESP]
dc.contributor.authorMoraes, João Carlos Silos [UNESP]
dc.contributor.authorYukimitu, K. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Tocantins (UFT)
dc.date.accessioned2014-05-20T13:29:39Z
dc.date.available2014-05-20T13:29:39Z
dc.date.issued2011-11-01
dc.description.abstractNucleation process and crystal growth for three samples of the (20-x)Li(2)O-80TeO(2)-xWO(3) glass system were studied using X-ray diffraction and differential scanning calorimetry techniques. X-ray diffraction data confirmed the amorphous characteristic of the as-quenched samples and indicated the growth of crystalline phases formed due to the thermal treatment for annealed samples. These results reveal the presence of three distinct gamma-TeO(2), alpha-TeO(2) and alpha-Li(2)Te(2)O(5) crystalline phases in the TL sample, and two distinct alpha-TeO(2) and gamma-TeO(2) crystalline phases in the TLW5 and TLW10 samples. The activation energy and the Avrami exponent were determined from DSC measurements. The activation energy values X-ray diffraction data of the TLW10 glass sample suggest that gamma-TeO(2) phase occur before the alpha-TeO(2). The results obtained for the Avrami exponent point to that the nucleation process is volumetric and that the crystal growth is two or three-dimensional.en
dc.description.affiliationUNESP Univ Estadual Paulista, Fac Engn, Ilha Solteira, SP, Brazil
dc.description.affiliationUFT Universidade Federal do Tocantins (UFT), Palmas, TO, Brazil
dc.description.affiliationUnespUNESP Univ Estadual Paulista, Fac Engn, Ilha Solteira, SP, Brazil
dc.format.extent613-618
dc.identifierhttp://dx.doi.org/10.1007/s10973-011-1312-4
dc.identifier.citationJournal of Thermal Analysis and Calorimetry. Dordrecht: Springer, v. 106, n. 2, p. 613-618, 2011.
dc.identifier.doi10.1007/s10973-011-1312-4
dc.identifier.issn1388-6150
dc.identifier.lattes8507741729691974
dc.identifier.urihttp://hdl.handle.net/11449/10034
dc.identifier.wosWOS:000296065100050
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal of Thermal Analysis and Calorimetry
dc.relation.ispartofjcr2.209
dc.relation.ispartofsjr0,587
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectTellurite glassesen
dc.subjectNucleationen
dc.subjectCrystallizationen
dc.subjectActivation energyen
dc.subjectXRDen
dc.subjectDSCen
dc.titleAvrami exponent of crystallization in tellurite glassesen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer
unesp.author.lattes8507741729691974
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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Artigos - Física e Química - FEIS