Abstract
To study the effect of K 2O in the glass–ceramics, the heat-treated glasses were characterized by using X-ray diffraction, Fourier transform infrared spectroscopy and Scanning electron microscope. The results showed that the K 2O contents were not effects on the formation of new crystals but increased the lattice constant. Combined with XRD data, the FT-IR peaks assigned to Ti–O and Si–O vibration indicate the formation of fresnoite(Ba 2TiSi 2O 8) phase. The crystal shape and crystallization tendency of Ba 2TiSi 2O 8 crystal by the K 2O contents were also discussed.
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