热处理对CaO-Al2O3-SiO2系烧结微晶玻璃吸水率的影响

By means ofmeasuring the changes of the water absorbance of glass particles in sintering withdifferent starting size and the observation by scanning electron microscopy, the effect ofheat treatment on the water absorbance of CaO-Al₂O₃-SiO₂sintered glass-ceramics was studied in order to decrease the water absorbance ofglass-ceramics. Results show that the glass-ceramics has higher water absorbance whilesintering at lower temperature (900　℃). The water absorbance decreases greatly astemperature goes up. However, it increases slightly during longer stay at highertemperature (1　050～1　100　℃). The starting particle size of the glass has minoreffect on the water absorbance of glass-ceramics sintering at higher temperature.