Influence of Fe2O3 on non-isothermal crystallization kinetics and microstructure of lithium titanium phosphate glass-ceramics
作者： E. Mohaghegh , A. Nemati , B. Eftekhari Yekta , S. Banijamali , F. Rezaei
DOI: 10.1016/J.JNONCRYSOL.2014.10.023
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摘要: Abstract The crystallization behavior and microstructure of Li2O–TiO2–P2O5–Fe2O3 glass-ceramic were investigated by means differential thermal analysis (DTA), X-ray diffraction (XRD) scanning electron microscopy (SEM). Crystallization kinetic parameters including the activation energy for (Ec) Avrami exponent (n) also measured. was found to be 656 kJ/mol 295 kJ/mol, respectively, in Fe2O3-free 5 weight ratio Fe2O3 containing glasses. FTIR spectra revealed a strong band due influence content on different phosphate groups. Impedance spectroscopy studies suggest that ionic conductivity glass-ceramics optimized has been improved as compared with free one. According obtained results, LiTi2(PO4)3 precipitated near spherical pyramid-like crystals.
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