Cobalt-lithium stuffed quartz solid solutions by sol-gel synthesis
1 : Clausthal University of Technology, Institute of Non-Metallic Materials, Germany
2 : Department of Materials Science, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany
* : Corresponding author
Stuffed aluminosilicate quartz solid solutions (Qss) represent the main functional component of state-of-the-art zero-thermal-expansion glass-ceramics. For saving lithium resources, the possibility of lithium substitution is investigated. Therefore Qss in the CoO-Li2O-Al2O3-SiO2-system were prepared by sol-gel synthesis. Starting from Qss with spodumene composition (Li2O Al2O3 4 SiO2) lithium ions were substituted stepwise by cobalt ions. The as-received amorphous sol-gel materials were crystallized >750°C and depending on cobalt concentration, Qss and/or spinel were detected by X-ray diffraction (XRD). Thermal expansion of Qss was measured in-situ by high-temperature XRD.
| Subject : | : | Poster |
| Topics | : | Session 6 - Glass-ceramic / Crystallization / Nano and microtexturation |
| Keywords | : | Sol gel ; thermal expansion ; quartz solid solutions ; lithium aluminosilicate ; cobalt |
| PDF version | : |  PDF version |
