The characterization of the barium titanate ceramic powders prepared by the Pechini type reaction route and mechanically assisted synthesis

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• 作者：Z.Ž ; . Lazarevi&#x107 ; M. Vijatovi&#x107 ; Z. Dohč ; evi&#x107 ; -Mitrovi&#x107 ; N.Ž ; . Romč ; evi&#x107 ; M.J. Romč ; evi&#x107 ; N. Paunovi&#x107 ; B.D. Stojanovi&#x107
• 关键词：Calcination ; Sintering ; Spectroscopy ; X-ray methods
• 刊名：Journal of the European Ceramic Society
• 出版年：2010
• 出版时间：January 2010
• 年：2010
• 卷：30
• 期：2
• 页码：623-628
• 全文大小：917 K

文摘

BaTiO₃ ceramic powders were prepared by a complex method based on the Pechini type reaction route and mechanically assisted synthesis. In both ways BaTiO₃ ceramics were sintered after 120 min on 1300 °C without pre-calcination steps. The crystal structure was investigated by the XRD, IR and Raman spectroscopy. The particle size and morphology of BaTiO₃ were examined by XRD and SEM. The XRD results of powders indicate the formation of cubic phase of BaTiO₃. It can be observed that in the case of Pechini process BaTiO₃ powder is well crystallized but in the case of mechanochemistry process, significant amount of amorphous phase was detected. The sintered BaTiO₃ ceramic sample prepared by Pechini process, shows the formation of tetragonal phase. However, IR and Raman spectrum showed a mixture of cubic and tetragonal for BaTiO₃ obtained by Pechini process and tetragonal for BaTiO₃ obtained by mechanically assisted synthesis.