Structure of heat-treated sol-gel SiO2 glasses containing silver
The crystallization of bulk amorphous SiO2 samples, prepared by the sol-gel method, was obtained by heat treatments in air at temperatures as low as 500 °C. This occurs when silver is added to the precursor solutions in an amount such that it forms aggregates embedded in the glass. Another requireme...
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Veröffentlicht in: | Journal of materials research 2001-07, Vol.16 (7), p.2007-2012 |
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Hauptverfasser: | , , , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | The crystallization of bulk amorphous SiO2 samples, prepared by the sol-gel method, was obtained by heat treatments in air at temperatures as low as 500 °C. This occurs when silver is added to the precursor solutions in an amount such that it forms aggregates embedded in the glass. Another requirement to observe the low-temperature glass crystallization is that the bulk samples must be prepared from precursor solutions with specific compositions. These compositions, have a high H2O/TEOS ratio, which produces an amorphous SiO2 structure with some structural similarities to cristobalite, the phase in which the SiO2 glass crystallizes. |
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ISSN: | 0884-2914 2044-5326 |
DOI: | 10.1557/JMR.2001.0275 |