Electrical Resistivity Measurement of the Molten Cordierite Glass Using Two-wire method

Electrical resistivity (ER) is a main parameter in the melting processes of glasses. However, its measurement is difficult at high temperatures. In this study the electrical resistivity of different cordierite glass samples in the molten state was measured in the temperature range of ۱۱۰۰˚C to ۱۵۵۰ ˚C using the two-wire method. It was attempted to decrease the electrical resistivity of the glass by adding Na۲O to the base glass. In one sample ۰.۵% wt Na۲O was added and in another ۱%. It was observed that the electrical resistivity of the glass decreased as temperature increased. Also, it was found that the electrical resistivity of cordierite glass decreases with the addition of Na۲O. This was attributed to the high mobility of Na ions and mixed alkali effect.

Keywords:

Electrical resistivity , Cordierite Glass , high temperature