Synthesis of BaTi4O9 ceramics by reaction-sintering process |
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Authors: | Yi-Cheng Liou Chi-Ting Wu Ko-Hao Tseng Tzu-Chin Chung |
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Affiliation: | Department of Electronic Engineering, Kun-Shan University of Technology, Tainan Hsien 710, Taiwan, ROC |
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Abstract: | Synthesis of BaTi4O9 ceramics by a reaction-sintering process was investigated. The mixture of raw materials for stoichiometric BaTi4O9 were pressed and sintered into ceramics without any calcination stage involved. Pure BaTi4O9 phases were obtained at 1150-1280 °C. High-sintered density, 98.2-99.5% of theoretical value (4.533 g/cm3), can be obtained for pellets sintered at 1200-1280 °C for 2-6 h. Some rod-shaped grains 3-7 μm in the longitudinal axis appear in pellets sintered at 1230 °C. Both the size and the amount of these rod-shaped grains increase at higher sintering temperature. |
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Keywords: | A ceramics C X-ray diffraction D microstructure |
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