The Effects Of Zno Additive On Sintering Behavior, Microstructural Evolution And Microwave Dielectric Properties Of Li2tio3 Ceramics

The densification behavior, structural and microstructural evolution and microwave dielectric properties of Li2TiO3 + xZnO (x = 0, 0.5, 1, 1.5, 2, 3, and 5 mol%) ceramics have been investigated using X-ray diffraction, field emission scanning electron microscopy, raman spectroscopy and microwave resonant measurement. The Maximum density of 3.33 g/cm(3) was obtained in Li2TiO3 + 2ZnO ceramic at low sintering temperature of 1100 degrees C Scanning electron microscopy investigations revealed good close packing of grains when x = 2 and preferential grain growth when x >= 3. The maximum value of Q x f and Er were 31800 GHz and 22.5 in Li2TiO3 + 3ZnO and Li2TiO3 + 2ZnO compositions, respectively. The observed properties are attributed to the microstructural evolution and grain growth (first case) or high density of the obtained ceramic (second case).