Add time:09/27/2019         Source:sciencedirect.com

Strontium borate glasses containing different ratios of TiO2 were prepared. Thermal expansion measurements indicate variable and peculiar data in relation to the role of TiO2 in host SrO-B2O3 acting as both network former and modifier. The prepared glasses were nucleated around 500 °C except the base glass at 520 °C. X-ray diffraction measurements show the formation of strontium triborate as the main phase through all samples. The morphological surface of the glass-ceramics is strongly affected by the TiO2 ratio and the phase separation in such glasses was observed. Infrared absorption analyses indicate the presence of both triangular and tetrahedral borate groups. Moreover, it shows the formation of B-O-Ti linkage which affected by both of the Ti content and the heat treatment regime. The infrared absorption spectra for the glass-ceramic samples show the resolving band from 1200 to 1600 cm− 1 into several peaks as the result of the action between the titanium ions and BO3 units.

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