Sodium borosilicate glasses containing P2O5 and Al2O3 were prepared, and the behavior of phosphorus associated with the phase separation and the effect of Al2O 3 addition have been investigated. After the heat treatment, phase separation by spinodal decomposition was observed in the all samples. In the Al2O3-free glasses, phosphorus was preferentially distributed into B2O3-rich glass phase after the phase separation. With increasing Al2O3 content, the amount of phosphorus distributed into SiO2-rich glass phase increased. According to 31P MAS NMR measurements, in the Al2O 3-containing glasses, Q4 units free from terminal oxygen atoms were formed. It was suggested that the distribution of phosphorus depend on the PO4 units.
|Journal||IOP Conference Series: Materials Science and Engineering|
|Issue number||SYMPOSIUM 8|
|Publication status||Published - 2011|
|Event||3rd International Congress on Ceramics, ICC3 - Osaka, Japan|
Duration: Nov 14 2010 → Nov 18 2010
ASJC Scopus subject areas
- Materials Science(all)