Caracterización de vidrios del sistema Na2O-TiO2-SiO2.
- Pablos, A. De
- Villegas, M.A.
- Fernández Navarro, J.M.
ISSN: 0366-3175
Year of publication: 1994
Volume: 33
Issue: 1
Pages: 23-28
Type: Article
More publications in: Boletín de la Sociedad Española de Cerámica y Vidrio
Abstract
Six glasses in the Na20-Ti02-Si02 system with TÍO2 content ranging from 0 to 30 mol %were prepared. The samples were characterized thermal, chemical and mechanically. The structural and microstructural study were carried out by means of infrared spectroscopy (IR) and transmission electron microscopy (TEM), respectively. Thermal expansion coefficients of the glasses prepared are smaller than those of silicate glasses, while alkaline resistance is higher. Mechanical properties, refractive index and phase separation size are enhanced by the introduction of TÍO2. As IR spectroscopy indicates, Ti'^^ ions are located in octahedral environments [TÍO5] as a network modifier.