Volume 16, Issue 1 (March 2019)                   IJMSE 2019, 16(1): 1-10 | Back to browse issues page

‎ 10.22068/ijmse.16.1.1

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The Effects of ZnO Additive on Sintering Behavior, Microstructural Evolution and Microwave Dielectric Properties of Li2TiO3 Ceramics
T. Ebadzadeh , S. Ghaffari , M. Alizadeh , K. Asadian , Y. Ganjkhanlou
Abstract:   (18501 Views)
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/cm3 was obtained in Li2TiO3 + 2ZnO ceramic at low sintering temperature of 1100˚C. SEM investigations revealed good close packing of grains when x = 2 and preferential grain growth when x ≥ 3. The maximum values of Q × f = 31800 GHz and εr = 22.5 were obtained 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).
 
Keywords: Li2TiO3, ZnO addition, Microwave dielectric properties, Microstructure, Sintering
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Type of Study: Research Paper | Subject: Ceramics
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