The effect of cooling rate on the structure of sodium silicate glass

The effect of cooling rate on the structure of Na 2Si 3O 7 glass was studied by Raman spectroscopy. The shape of Raman spectra of glasses varies with cooling rate. By fitting the high-frequency region of the Raman spectra with Gaussian curves, the abundance of SiO 4 tetrahedra with different number...

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Bibliographic Details
Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2004-02, Vol.106 (3), p.295-299
Main Authors: Tan, Jin, Zhao, Shanrong, Wang, Weifeng, Davies, Gordon, Mo, Xuanxue
Format: Article
Language:English
Subjects:
Cooling rate
Glass
Glass structure
Silicate melt
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Summary:The effect of cooling rate on the structure of Na 2Si 3O 7 glass was studied by Raman spectroscopy. The shape of Raman spectra of glasses varies with cooling rate. By fitting the high-frequency region of the Raman spectra with Gaussian curves, the abundance of SiO 4 tetrahedra with different number of non-bridging oxygens (Q n ) are deduced. The structural species Q 4 and Q 2 increase with cooling rate and Q 3 decrease with cooling rate. Providing the faster cooling rate leads higher temperature feature of melt to preserve in glass, the changes of structural species in Na 2Si 3O 7 glass with cooling rate are consistent with the in situ high-temperature Raman results. From this study the rate-dependent glass structure should be taken into consideration in the glass processing, even with ordinary cooling technique.
ISSN:0921-5107
1873-4944
DOI:10.1016/j.mseb.2003.09.045