Effect of silver on phase separation and crystallization of niobium oxide containing glasses
Language
en
Article de revue
This item was published in
Journal of Solid State Chemistry. 2009, vol. 182, n° 6, p. 1351-1358
Elsevier
English Abstract
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 ...Read more >
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.Read less <
English Keywords
Glass
Crystallization
Nucleation agent
Niobium oxide
Origin
Hal imported