The effect of TiO2 on the structure and devitrification
behavior of potassium titanium germanate glass |
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| Authors: | S Gruji? N Blagojevi? M To?i? V ?ivanovi? B Bo?ovi? |
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| Institution: | (1) Faculty of Technology and Metallurgy, Karnegijeva, Belgrade, Serbia and Montenegro, 11000;(2) Institute for the Technology of Nuclear and Other Mineral Raw Materials, Franchet d'Esperey, Belgrade , Serbia and Montenegro, 11000 |
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| Abstract: | The
effect of replacing 20 mol% of GeO2 by TiO2
on the properties of potassium germanate glass was investigated. The structure
and devitrification behaviour of glasses were studied by Fourier transform
infrared spectroscopy (FTIR), differential thermal analysis (DTA) and X-ray
diffraction (XRD). It was observed that potassium titanium germanate has a
higher glass transition temperature and a higher thermal stability vs. crystallization.
The presence of two exothermic peaks on the DTA curve of potassium germanate
glass indicates the complex crystallization process. The XRD pattern of this
glass heated at the temperature of the first crystallization peak indicated
that the GeO2 and K2Ge7O15
were formed. Only the K2TiGe3O9
phase was identified, in a case when potassium titanium germanate glass was
heated at the temperature of the crystallization peak. |
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| Keywords: | differential thermal analysis (DTA) Fourier transform infrared spectroscopy (FTIR) glasses |
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