Author： Donohoe Lisa M. Shelby James E.
Publisher： Society of Glass Technology
ISSN： 0031-9090
Source： Physics and Chemistry of Glasses - European Journal of Glass Science and Technology Part B, Vol.47, Iss.1, 2006-02, pp. : 16-21
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Abstract
The glass forming region has been determined for the soda lime borate system. This system includes a region of stable immiscibility as well as a large region of homogeneous glass formation. Properties measured include density, thermal expansion coefficient, glass transformation temperature, and transformation range viscosity. The homogeneous glasses all display the behaviour typical of the borate anomaly, with little affect of soda to lime ratio on the position of maxima and minima associated with this anomaly in alkali borate glasses. The separation of the immiscible phases into distinct layers allows independent measurements of the properties of the two phases, which is not the case for metastable phase separation.
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