Effect of alkali ions on the crystallization of 3BaO{center_dot}5SiO{sub 2} glass
Journal Article
·
· Journal of the American Ceramic Society
OSTI ID:605774
- National Inst. of Standards and Technology, Gaithersburg, MD (United States). Ceramics Div.
In this study the authors have investigated the effects of alkali additions on the spherulitic crystallization process in 3BaO{center_dot}5SiO{sub 2} glass. Both Li{sup +} and Na{sup +} increased the growth rate of the spherulites and reduced the crystallization temperature from that in the base glass. Li{sup +} and Na{sup +} also reduced the temperature at which the microstructural transformation from spherulites to laths took place. Dielectric loss measurements suggest that the effect of the alkali additions on crystallization temperature is due to their concentration in grain boundaries, thereby lowering the viscosity of the remaining glass, and increasing mobility rates.
- OSTI ID:
- 605774
- Journal Information:
- Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 12 Vol. 80; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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