Preparation and Characterization of Zinc Titanate Materials

• Main Authors: Shin - Chi Chen, 陳炘祺
• Other Authors: Fang-Jung Huang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/20799412882420156938

碩士 === 國立高雄應用科技大學 === 化學工程系碩士班 === 96 === The present investigation has been focused on the ZnTiO3, which has an ilmenite structure. The ZnTiO3 powders doped with Mg ions resulting (Zn,Mg)TiO3 multi-functional ceramics were synthesized. FTIR, DTA/TGA, Raman, SEM and BET techniques were used to analyze the formation mechanism of the as-prepared precursor converting to ilmenite structure. However, the formation phase, microstructure and dielectric properties of ZnTiO3 were also investigated. It reveals that the decomposition of the precursor proceeded through four major steps including dehydration reaction, decomposition, combustion reaction and ZnTiO3 phase formation. The ZnTiO3 phase was formed initially at 500℃, and the pure ZnTiO3 phase could be obtained as the precursor calcined at 700℃. For ZnTiO3 doped with Mg, it is found that Mg2+ can replace the zinc ion and forms a solid solution in ZnTiO3 phase. It exhibits that a higher amount of Mg addition favors to inhibit the grain growth of the matrix. Besides, the thermal stability of (Zn1-xMgx)TiO3 was enhanced as the sintering temperature and the addition amount of Mg increased.