Structural and crystallization characteristics of K2O.TiO2.3GeO2 glass

Structure and crystallization of K 2 O.TiO 2 .3GeO 2 glass have been investigated by means of Fourier transform infrared spectroscopy (FTIR), differential thermal analysis (DTA), differential scanning calorimetry (DSC), x-ray diffraction analysis (XRD), and scanning electron microscopy (SEM). XRD analysis of crystallized glass reveals the presence of crystalline K 2 O TiO 2 3GeO 2 indicating the same composition of crystalline and parent glass. For glass particle size > 0.15 mm volume crystallization is dominant crystallization mechanism. SEM investigation of the crystallized glass confirmed volume crystallization of spherical nuclei.