Features of crystallization of a bioactive alkali free glass

In this work, bioactive alkali free glass was synthesized in the RO-CaF2-P2O5-Al2O3-SiO2 system and the results of crystallization of glass in the temperature range 700-1000 °C were investigated. The glass microstructure, phase composition and structural changes of crystallized glass by powder X-ray diffraction and IR spectroscopy were studied. The effect of temperature on the phase composition of the resulting glass-ceramic material and their amount is established. At 700 °C, fluorapatite is formed with a small amount of anorthite. With an increase in the crystallization temperature, anortite and vitlocite become the main phases, and fluorapatite is present in smaller quantities