| 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
72.510–7/K to 7710–7/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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