Mechanical, Structural and Crystallization Properties in Titanate Doped Phosphate Glasses

The authors reported the data found by FT-IR spectroscopy, ultrasonic velocities, DTA investigations of 5Al(2)O(3)- 25Li(2)O - (70 - x) P2O5- x TiO2, (0 <= x <= 25 mol%) of the prepared glass samples. From FT-IR spectroscopy has been indicated the titanate doped phosphate glasses increase the produce of non-bridging oxygens. By ultrasonic velocities has been indicated that these velocities are decreased as well as elastic-moduli and density by the concentration of titanate. This behaviour due to decreasing the density, cross-link density, and increase in molar volume. By DTA the values of (T-g), (T-c) and (T-p) decrease this is due to a decrease the bond strength. A parent glass-ceramics of these glasses have been prepared, and investigate by XRD and SEM. The parent glass-ceramic of these glasses have been prepared and investigate by XRD. Li2P2O6(lithium orthophosphate) crystalline phase is showed in glasses-free titanate and transformed into LiPO(3)in glasses containing titanate. The surface morphology of glass-ceramic has been checked by scanning electron microscope and showed a nearly unchanging surface in glasses-free titanate and large interstitial pores in glasses containing titanate.