2002 Volume 43 Issue 3 Pages 355-358
A reliable fabrication process of non-silica glasses is required to suppress crystallization. The crystallization behavior of zinctellurite (ZnO–TeO2) glass at different rates of heating and cooling were studied by an in situ high-temperature X-ray diffractometer (a rapid measurement system) and differential thermal analysis (DTA). The DTA results compared with the X-ray diffraction data resulted in crystallization and phase relations, during heating and cooling, of the glass. During the heating process, α-TeO2 and ZnTeO3 were found to crystallize first, followed by the crystallization of Zn2Te3O8. While during the cooling process from melt, α-TeO2 was found to crystallize first, followed by the crystallization of Zn2Te3O8. The present study results in reliable data of the crystallization process and presents a possibility of an approach to make accurate T-T-T diagram which can show the crystallization tendency.