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STUDY THE EFFECT OF TIO2 ADDITIVE ON THE PROPERTIES OF GLASS-CERAMICS PRODUCTS FROM SODA LIME GLASS

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 حسين طلب نهابة سرحان السلطاني
07/12/2016 09:44:22
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In this research, a range of TiO2 concentration (0 - 10) wt.% was used as a nucleating agent to produced glass-ceramics from soda-lime glass with titanium dioxide TiO2 by the crystallization process from glass. The samples were prepared by using powder technology. After the powders mixing and pressing, the formed samples were heated to the nucleation temperature (370?C) with heating rate (5?C/min) and held for (2 hours) of time. After that the nucleated samples were heated above to the crystallization temperature ( 550?C) and held for (2 hours) of time in order to grow the formed titanai nucleus to crystals and to convert the glass into glass – ceramic. The physical properties (density, porosity, XRD and visual properties), mechanical properties (compressive strength and hardness) and thermal properties (DSC) were tested for all the produced samples. The results showed that increasing of compressive strength, hardness, density, glass transition temperature and crystallization temperature for glass-ceramic samples with increase of TiO2 additive percentage. Also it was showed that decreasing of porosity with increase of TiO2 additive percentage. While the X-ray diffraction analysis showed a present of crystalline phases in the glass matrix, this means production of glass-ceramic from the prepared compositions.

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  • KEY WORDS: glass- ceramic, titanium dioxide TiO2, soda-lime glass, XRD, DSC.