Precursor to glass and silicon Silica is the primary ingredient in the production of most glass. As other minerals are melted with silica, the principle of freezing point depression lowers the melting point of the mixture and increases fluidity. The glass transition temperature of pure SiO2 is about 1475 K. When molten silicon dioxide SiO2 is rapidly cooled, it does not crystallize, but solidifies as a glass. Because of this, most ceramic glazes have silica as the main ingredient.
Precursor to glass and silicon Silica is the primary ingredient in the production of most glass. As other minerals are melted with silica, the principle of freezing point depressio.n lowers the melting point of the mixture and increases fluidity. The glass transition temperature of pure SiO2 is about 1475 K When molten silicon dioxide SiO2 is rapidly cooled, it does not crystallize, but solidifies as a glass. Because of this, most ceramic glazes have silica as the main ingredient.