Abstract
Glasses of composition Y:Si:Al = 3.45:3:2 cation ratio containing various amounts of nitrogen (N = 5, 8, 15 and 22 e/o) were prepared by ball milling powders in alcohol and also by an environmentally friendly aqueous route. For all properties studied (density, glass transition temperature, microhardness and Young's modulus) values for water processed compositions were slightly lower than the values for alcohol processed compositions, because of less rigid bonding in water processed glasses. The reason for lower rigidity may be lower nitrogen contents than for equivalent alcohol processed glasses or the replacement of some bridging oxygens with =Si-OH terminations due to the water-based processing of these glasses. Further work is necessary to determine which of these effects control glass properties and structure.
Original language | English |
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Pages (from-to) | 1927-1930 |
Number of pages | 4 |
Journal | Key Engineering Materials |
Volume | 264-268 |
Issue number | III |
Publication status | Published - 2004 |
Event | Proceedings of the 8th Conference and Exhibition of the European Ceramic Society - Istanbul, Turkey Duration: 29 Jun 2003 → 3 Jul 2003 |
Keywords
- Hardness
- Sialon Glass
- T
- Young's Modulus