ISSN 0862-5468 (Print), ISSN 1804-5847 (online) 

Ceramics-Silikáty 49, (4) 278 - 282 (2005)

Grujic Snezana 1, Blagojevic Nikola 1, Tosic Mihajlo 2, Zivanovic Vladimir 2
1 Faculty of Technology and Metallurgy, University of Belgrade, Karnegijeva 4, 110 00 Belgrade, Serbia and Montenegro
2 Institute for the Technology of Nuclear and Other Mineral Raw Materials, Franchet d' Esperey 86, 110 00 Belgrade, Serbia and Montenegro

Keywords: Germanate glass, Alkali germanate glasses, Crystallization mechanism

Structure and crystallization of K₂O·TiO₂·3GeO₂ 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 K₂O TiO₂ 3GeO₂ 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.

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