Crystallization kinetics of a soda lime silica glass with TiO$_{2}$ addition

Abstract

Studies conducted into Na$_{2}$O-CaO-3SiO$_{2}$ glass composition suggest that its phase transformation occurs from the surface towards the interior of the sample. In a study carried out in 1982, it was reported that no addition of nucleating agents modified the mechanism. Taking advantage of the disposition materials synthesized by nanotechnology, in this study TiO$_{2}$ in nanometer size was used with the idea that, because of its qualities, it could modify the crystallization mechanism. The glasses obtained as well as the thermally treated samples, were evaluated by the X-ray diffraction (XRD) powder method, differential thermal analysis (DTA), and by optical microscopy and high resolution transmission electron microscopy (HRTEM). Within the range of TiO$_{2}$ concentration studied (0 -- 10 wt %), 10 wt % of TiO$_{2}$ considerably reduced the Na$_{2}$O-2CaO-3SiO$_{2}$ phase crystallization process. The crystallization mechanism was not modified and TiO$_{2}$ did not form compounds with the matrix components.