Author： Shelby J. E. Shelby S. R.
Publisher： Society of Glass Technology
ISSN： 0031-9090
Source： Physics and Chemistry of Glasses - European Journal of Glass Science and Technology Part B, Vol.41, Iss.2, 2000-04, pp. : 59-64
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Abstract
Many properties of lithium calcium silicate glasses are strongly affected by the morphology of the samples. Properties considered in this study include density, refractive index and thermal expansion coefficient which are not sensitive to the presence of phase separation, and electrical conductivity, glass transformation temperature, and dilatometric softening temperature, which are strongly affected by phase separation. Sharp changes in electrical conductivity and dilatometric softening temperature are caused by changes in the connectivity of the modifier rich and silica rich phases, respectively. Results of this study emphasise the interaction between effects of atomistic and morphologic structures in controlling the properties of glasses.
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