Jh. Jean et Cr. Chang, EFFECT OF CRYSTALLIZABLE CORDIERITE GLASS ON DEVITRIFICATION OF PYREXBOROSILICATE GLASS, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 199(2), 1995, pp. 11-13
The effects of crystallizable cordierite glass on devitrification of P
yrex borosilicate glass at 800 degrees C have been investigated. X-ray
diffraction results show that with a cordierite glass content greater
than 40 vol.%, the cristobalite observed in the pure Pyrex borosilica
te glass is completely prevented. The above result is further evidence
d by thermal expansion measurements in which the thermal expansion coe
fficient decreases dramatically with cordierite glass present.