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dc.contributor.authorZiemath, E. C.-
dc.contributor.authorDiaz-Mora, N.-
dc.contributor.authorZanotto, E. D.-
dc.identifier.citationPhysics and Chemistry of Glasses, v. 38, n. 1, p. 1-5, 1997.-
dc.description.abstractWith suitable thermal treatments, a nearly stoichiometric cordierite glass (2 MgO.2 Al2O3. 5 SiO2) shows a variety of crystal morphologies on the external surfaces: lozenges, regular and elongated hexagons, spherical and square shaped particles. We initially identified these morphologies through optical and scanning electron microscopy techniques. Their structural features were distinguished by x-ray diffraction patterns, infrared and Roman microprobe spectra. We concluded that there are close structural similarities for: lozenges and glass matrix; regular and elongated hexagons; spherical and square particles. The ordering degree increases in the following sequence: glass matrix, lozenges, hexagons, squares and spheres. The lozenge crystals are known as X-phase. The hexagons belong to the μ-cordierite (high quartz solid solution) metastable phase and the squares and spheres to the α-cordierite stable phase.en
dc.titleCrystal morphologies on a cordierite glass surfaceen
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationDepartment of Materials Engineering UFSCar, C. P. 676, 13565-905 São Carlos (SP)-
dc.description.affiliationDepartment of Physics IGCE UNESP, C P 178, 13500-970 Rio Claro (SP)-
dc.description.affiliationUnespDepartment of Physics IGCE UNESP, C P 178, 13500-970 Rio Claro (SP)-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofPhysics and Chemistry of Glasses-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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