The crystallization and microstructure evolution of lithium disilicate-based glass-ceramic

In this work, transformation of crystalline phases and development of microstructure of two kinds of glass-ceramics, SiO2–Li2O–P2O5 and SiO2–Li2O–K2O–Al2O3–ZrO2–P2O5, have been studied by X-ray diffraction and scanning electron microscopy analysis. In the former glass, a small amount of spherical Li2Si2O5 crystals precipitated at the usual nucleation temperature, which changed little in size and packing density with the increase of the...