In situ crystallization and elastic properties of transparent MgO–Al2O3–SiO2 glass‐ceramic

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorSant'Ana Gallo, Leonardo-
Autor(es): dc.creatorCélarié, Fabrice-
Autor(es): dc.creatorAudebrand, Nathalie-
Autor(es): dc.creatorRodrigues, Ana Candida Martins-
Autor(es): dc.creatorZanotto, Edgar Dutra-
Autor(es): dc.creatorRouxel, Tanguy-
Data de aceite: dc.date.accessioned2026-02-09T11:26:17Z-
Data de disponibilização: dc.date.available2026-02-09T11:26:17Z-
Data de envio: dc.date.issued2018-12-17-
Data de envio: dc.date.issued2018-12-17-
Data de envio: dc.date.issued2017-05-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/32165-
Fonte completa do material: dc.identifierhttps://onlinelibrary.wiley.com/doi/full/10.1111/jace.14767-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1140795-
Descrição: dc.descriptionGlass‐ceramics (GC) generally possess enhanced mechanical properties compared to their parent glasses. The knowledge of how crystallization evolves and affects the mechanical properties with increasing temperature is essential to optimize the design of the crystallization cycle. In this study, we crystallized a glass of the MgO–Al2O3–SiO2 system with nucleating agents TiO2 and ZrO2. The crystallization cycle comprised a 48 hour nucleation treatment at the glass‐transition temperature followed by a 10 hour growth step at a higher temperature. During this cycle, the evolution of crystalline phases was followed by high‐temperature X‐ray diffraction (HTXRD), which revealed the presence of karooite (MgO·2TiO2), spinel (MgO·Al2O3), rutile (TiO2), sillimanite (Al2O3·SiO2), and sapphirine (4MgO·5Al2O3·2SiO2). The same heat treatment was applied for in situ measurement of elastic properties: elastic modulus, E, shear modulus, G, and Poisson's ratio, ν. The evolution of these parameters during the heating path from room temperature to the final crystallization temperature and during the nucleation and the crystallization plateaus is discussed. E and G evolve significantly in the first two hours of the growth step. At the end of the crystallization process, the elastic and shear moduli of the GC were approximately 20% larger than those of the parent glass.-
Idioma: dc.languageen-
Publicador: dc.publisherWiley-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceJournal of the American Ceramic Society-
Palavras-chave: dc.subjectCrystallization-
Palavras-chave: dc.subjectElastic constants-
Palavras-chave: dc.subjectGlass‐ceramics-
Palavras-chave: dc.subjectMechanical properties-
Título: dc.titleIn situ crystallization and elastic properties of transparent MgO–Al2O3–SiO2 glass‐ceramic-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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