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http://dx.doi.org/10.6111/JKCGCT.2022.32.3.103

The effect of Al2O3 on the isokom temperatures in soda-lime glass  

Kang, Seung Min (International Graduate School of Design Convergence, Hanseo University)
Kim, Chang-sam (Industry-Academic Cooperation Foundation, Hanseo University)
Publication Information
Journal of the Korean Crystal Growth and Crystal Technology / v.32, no.3, 2022 , pp. 103-106 More about this Journal
Abstract
The effect of Al2O3 on isokom temperatures in soda-lime glass is estimated by comparing calculated isokom temperatures using viscosity model proposed by Lakatos. Substitution of SiO2 with Al2O3 by 0.5 mol% raises the isokom temperatures by 3.1, 3.3, 3.6 and 7.2℃ at the viscosity of log η = 12.3, 10, 6.6 and 1 (Pa·s), respectively. Meanwhile, replacing 0.5 mol% of CaO with Al2O3 raises the isokom temperatures by 1.6, 2.3, 4.1 and 17.7℃ at the viscosity of log η = 12.3, 10, 6.6 and 1 (Pa·s), respectively.
Keywords
Soda-lime glass; Viscosity; Isokom temperature; Lakatos model; $Al_2O_3$;
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