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Transactions of the INDIAN CERAMIC SOCIETY   Vol. 78  2019
Thermal, Mechanical and Optical Properties of TiO2-doped Sodium Silicate Glass-Ceramics
Imtiaz Hussain,1, 2 Eric K. Barimah,2 Yaseen Iqbal,1 Gin Jose2 and Raz Muhammad3
Pages : 125-130
DOI : 10.1080/0371750X.2019.1626287
Abstract
In this study, local mineral (silica sand) obtained from Hazara division, Khyber Pakhtunkhwa, Pakistan was fabricated into soda-lime silicate glass. Titanium dioxide (TiO2) concentration in the range of 1-3 wt% was added as a nucleating agent to investigate its effect on crystallization phase, density, hardness, thermal expansion coefficient (), glass transition temperature (Tg), micro hardness and optical bandgap of soda-lime silicate glass. XRD analysis revealed the formation of different crystalline phases such as cristobalite (SiO2), wollastonite (CaSiO2), and rutile (unrefined TiO2, often with iron, F3+) at different processing temperatures. The coefficient of thermal expansion and the optical gap energies varied from 72.510–7/K to 7710–7/K and 3.71-3.93 eV with TiO2 concentration, respectively. The mechanical properties were also in good agreement with those of commercially used glass-ceramics. [Keywords: Silica sand, Titanium oxide, Soda-lime silicate glass]
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