Alkali Diffusion and Electrical Conductivity in Sodium Borate Glasses
Abstract
The diffusion coefficient of sodium, 22Na, and silver, 110Ag, and electrical conductivity for sodium borate glasses (4-24 mol% Na2O) has been measured from 100°C to slightly below the glass transition temperature, Tg. Unlike silicate glasses where the self-diffusion coefficient is much larger than the impurity diffusion coefficient, DNa and DAg had close to the same magnitude in the sodium borate glasses. In some glasses, DAg was slightly larger than DNa. Na2O-Ag2O-B2O3 glasses show a relatively small mixed alkali effect, despite the significant mass difference between Ag(≈108) and Na(≈23). It is concluded that the mixed alkali effect is more dependent upon the difference in ionic radii rather than differences in mass.
Recommended Citation
Y. H. Han et al., "Alkali Diffusion and Electrical Conductivity in Sodium Borate Glasses," Journal of Non-Crystalline Solids, vol. 30, no. 3, pp. 241 - 252, Elsevier, Jan 1979.
The definitive version is available at https://doi.org/10.1016/0022-3093(79)90163-7
Department(s)
Materials Science and Engineering
Keywords and Phrases
Glass
International Standard Serial Number (ISSN)
0022-3093; 1873-4812
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1979 Elsevier, All rights reserved.
Publication Date
01 Jan 1979
