Effect of silver on phase separation and crystallization of niobium oxide containing glasses
Langue
en
Article de revue
Ce document a été publié dans
Journal of Solid State Chemistry. 2009, vol. 182, n° 6, p. 1351-1358
Elsevier
Résumé en anglais
Effect of silver introduction in sodium phosphate and sodium borophosphate glasses containing large amount of niobium oxide have been investigated using differential scanning calorimetry and XRD. Same sodium niobate phase ...Lire la suite >
Effect of silver introduction in sodium phosphate and sodium borophosphate glasses containing large amount of niobium oxide have been investigated using differential scanning calorimetry and XRD. Same sodium niobate phase in the Nb<sub>2</sub>O<sub>5</sub>–NaNbO<sub>3</sub> based solid solution have been observed following two heat treatments designed for nucleation and growth of the crystalline phase. Silver introduction in the glass composition is clearly responsible for increasing the crystallization rate. Its effect after nucleation and crystallization treatments has been shown. Phase metastable separation is occurring during heat treatment with formation of a phosphate rich and niobium rich phase. Crystallization effect on optical transparency of glasses and on Raman scattering response have been investigated.< Réduire
Mots clés en anglais
Glass
Crystallization
Nucleation agent
Niobium oxide
Origine
Importé de halUnités de recherche