Ceramics-Silikáty 49, (4) 278 - 282 (2005) |
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STRUCTURAL AND CRYSTALLIZATION CHARACTERISTICS OF K₂O·TiO₂·3GeO₂ GLASS
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Grujic Snezana 1, Blagojevic Nikola 1, Tosic Mihajlo 2,
Zivanovic Vladimir 2
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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
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Keywords: Germanate glass, Alkali germanate glasses, Crystallization mechanism
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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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