CRYSTALLIZATION AND PROPERTIES OF A LOW-K GLASS COMPOSITE

The effect of gallium oxide on crystallization, thermal expansion and dielectric behaviors of a binary glass composite which contains a low- softening Pyrex borosilicate glass and a high-softening high silica gl ass has been studied. It is found that on sintering, cristobalite prec ipitates out of the initial amorphous binary glass mixture; however, t he addition of gallium oxide prevents this. The above result is furthe r supported by microstructural observation, thermal expansion and diel ectric constant measurements.