MgO-Al2O3-SiO2 Glass-Ceramic Prepared by Sol-Gel Method
The crystallization behavior of MgO-Al2O3-SiO2 glass-ceramics by sol-gel technology was investigated by using x-ray diffraction (XRD), differential thermal analysis (DTA), Scanning electron microscopy (SEM). The results showed that: (1)α-cordierite phase was precipitated when the green body was calcined at 1050°C, and α-cordierite of high purity and stability could be formed at 1100°C; (2) Adding an appropriate amount of low melting point glass powder into the green body may provide liquid-phase environment during the sintering process, which will help enhance the tightness density of glass-ceramic, and thus improve its flexural strength.
Q. H. Yuan et al., "MgO-Al2O3-SiO2 Glass-Ceramic Prepared by Sol-Gel Method", Advanced Materials Research, Vol. 92, pp. 131-137, 2010