Preparation and densification of BaTiO3 nanopowder by sol-gel autoigniting synthesis |
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| Institution: | 1. Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China;2. Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China;3. Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China |
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| Abstract: | Autoigniting synthesis of gel from Ba(NO3)2, TiO(NO3)2 and C6H8O7H2O aqueous solution was investigated at an initial temperature of 600℃ and tetragonal BaTiO3 nanopowder with particle size of 80nm was prepared. It is indicated that the specific surface area of the combustion product before and after calcination is 14.74 m2/g and 12.49 m2/g, respectively. The combustion wave is composed of solid phase reaction zone and gaseous phase flame reaction zone. The combustion flametemperature is 1 123 K derived from thermocouple measurement. The characteristics and densification behavior of the sol-gel autoigniting synthesized BaTiO3 nanopowder were investigated. |
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| Keywords: | sol-gel autoigniting synthesis barium titanate densification |
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