Abstract

• Glass ceramics were prepared by the sol-gel method using sodium metasilicate (Na2SiO3) as a silica source. The obtained samples were sintered at three different temperatures ( 800℃, 900℃, and 1000℃ ).The presence of sodium calcium silicate was observed by an X-ray diffraction (XRD) pattern. The major phase formation of combeite (Na2Ca2Si3O9) and the secondary phase formatting were also observed. The optical band gap of this sample was investigated with the help of a UV-vis spectrophotometer. The optical band gaps were found to be in the range of 4.7 eV – 4.92 eV. The Fourier Transform Infrared (FTIR) spectroscopy was employed for the characterization of these materials.