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Viscosity of the supercooled, glass-forming liquid

Tg is an isoviscous point for all glasses occurring at about 10 - Pas. The ratio of 7 to the hquidus, expressed in Kelvin, for most glasses is usually close to 0.67. This so-called two-thirds rule is a useful rule of thumb. [Pg.416]

Above Tg, the supercooled glass-forming hquid exhibits decreasing viscosity with increasing temperature. On the one hand the glass-forming hquid of silica exhibits a relatively small and constant temperature coefficient of viscosity, e.g. decreasing from Pas [Pg.416]

The viscosity ( q)-temperature (T) relation of strong glass-forming liquids follows the Vogel-Fulcher-Tammann model [9]  [Pg.417]


See other pages where Viscosity of the supercooled, glass-forming liquid is mentioned: [Pg.410]    [Pg.416]   


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