| Texto completo | |
| Autor(es): |
Soares, Viviane Oliveira
;
Zanotto, Edgar Dutra
Número total de Autores: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | International Journal of Applied Ceramic Technology; v. 13, n. 5, p. 948-955, SEP-OCT 2016. |
| Citações Web of Science: | 1 |
| Resumo | |
Dense (similar to 98.5%), lithium aluminum silicate glass-ceramics were obtained via the sinter-crystallization of glass particle compacts at relatively low temperatures, that is, 790-875 degrees C. The effect of P2O5 on the glass-ceramics' sinter-crystallization behavior was evaluated. We found that P2O5 does not modify the surface crystallization mechanism but instead delays the crystallization kinetics, which facilitates viscous flow sintering. Our glass-ceramics had virgilite (LixAlxSi3-xO6; 0.5 < x < 1), a crystal size <1 m, and a linear thermal expansion coefficient of 2.1 x 10(-6)degrees C-1 in the temperature range 40-500 degrees C. The overall heat treatment to obtain these GCs was quite short, at similar to 25 min. (AU) | |
| Processo FAPESP: | 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros |
| Beneficiário: | Edgar Dutra Zanotto |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |