Abstract
In this letter, we investigate the correlation between glass microstructure and glass stability (GS) in soda lime aluminosilicates. We find a loss of GS (i.e., an onset of crystallization) in the glasses above a critical concentration of Al 2O 3 when heating at the standard rate of 20 K/min. This loss in GS may be attributed to formation of five-fold coordinated Al species when [Al 2O 3]/[Na 2O] > 1. The primary crystalline phase is identified as nepheline, in which Al exists in four-fold coordination. This implies that the five-fold coordinated Al is energetically less stable compared to Al in a tetrahedral environment.
Original language | English (US) |
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Article number | 041906 |
Journal | Applied Physics Letters |
Volume | 101 |
Issue number | 4 |
DOIs | |
State | Published - Jul 23 2012 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)