Abstract
I HAVE shown1,2 that there is a linear relation between the volume v associated with an oxygen ion in a glass and the composition of the glass. The relation for simple soda–silica glasses is: and for simple potash silica glasses: where R is the number of oxygen ions per network-forming atom. v is modified by the introduction of a third oxide into soda or potash glass. Introduction of a network-forming oxide should be allowed for in the calculation of R and then v can be obtained from equations (1) or (2) with a slight modification of the additive constant (15.1 for glasses containing alumina and 14.6 for those containing beryllia). Boron trioxide causes a further correction and then: Chemical symbols with an asterisk denote the number of gram-ions in 100 gm. of glass.
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References
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NÁRAY-SZABÓ, I. Structure of Glass. Nature 183, 886–887 (1959). https://doi.org/10.1038/183886a0
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DOI: https://doi.org/10.1038/183886a0
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