Dehydration of Gels and Glasses in the Systems B2 O3-SiO2 and ZrO2-SiO2 Prepared by the Sol-Gel Process from Metal Alkoxides |
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| Authors: | Masayuki Nogami |
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| Affiliation: | Government Industrial Research Institute, Osaka, 1-8-31 Midorigaoka, Ikeda Osaka 563, Japan |
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| Abstract: | Dehydration of gels prepared by the sol-gel process from metal alkoxides in the systems B2O3-SiO2 and ZrO2-SiO2 was determined by measuring the shrinkage of the gel on heating. Dehydration was enhanced with increased ZrO2 content, whereas it decreased with B2O3 content. Diffusion of water was also measured in the nonporous glasses obtained by heating the gels. The diffusion rate was independent of the composition of the glass. |
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