| 双重熔盐法制备片状BaTiO_3粉体 |
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| 引用本文： | 丁西亚,沈波,翟继卫,付芳,张景基,姚熹.双重熔盐法制备片状BaTiO_3粉体[J].硅酸盐学报,2009,37(8). |
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| 作者姓名： | 丁西亚 沈波 翟继卫 付芳 张景基 姚熹 |
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| 作者单位： | 同济大学功能材料研究所,上海,200092 |
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| 基金项目： | 国家重点基础研究发展计划，上海市科委重点基础，上海市科学技术委员会 |
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| 摘 要： | 用双重熔盐法制备片状Bi4Ti3O12粉体,以Bi4Ti3O12为中间产物通过离子交换制备了BaTi03片状粉体,并对其工艺过程进行了优化.利用X射线衍射分析合成粉体的相结构,用扫描电子显微镜观察其显微形貌.初步探讨了BaTiO3片状粉体的生长机理.结果表明:反应温度和化学组成对中间产物Bi4Ti3O12的微观形貌具有显著影响,在1 000℃以下时,随着反应温度升高,片状尺寸增大;当相对增加Bi2O3的量时,Bi4Ti3O12片状的尺寸增大.通过离子交换制备BaTiO3时,除了模板Bi4Ti3O12的形貌对BaTiO3的晶粒生长具有影响外,反应温度和化学组成同样对BaTiO3的晶粒生长具有显著影响.合成片状Bi4Ti3O12粉体的最佳的条件为:BaTiO3与Bi4Ti3O12的摩尔比为10:1,1 000℃合成2h.
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| 关 键 词： | 双重熔盐法 片状钛酸钡粉体 工艺研究 |
PREPARATION OF TABULAR BaTiO_3 POWDER BY TWO-STEP MOLTEN SALT METHOD |
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| DING Xiya,SHENG Bo,ZHAI Jiwei,FU Fang,ZHANG Jingji,YAO Xi.PREPARATION OF TABULAR BaTiO_3 POWDER BY TWO-STEP MOLTEN SALT METHOD[J].Journal of The Chinese Ceramic Society,2009,37(8). |
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| Authors: | DING Xiya SHENG Bo ZHAI Jiwei FU Fang ZHANG Jingji YAO Xi |
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| Affiliation: | Functional Materials Research Laboratory;Tongji University;Shanghai 200092;China |
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| Abstract: | A kind of tabular BaTiO3 powder was synthesized by the two-step molten salt method and using ion charge to the tabular intermediate Bi4Ti3O12. The phase composition and microstructure of these powders were analyzed by X-ray diffraction and scanning electron microscopy. The mechanism of the tabular BaTiO3 growth was studied preliminarily. The results indicate that the two-steps molten salt process parameters and the mole ratio of raw materials greatly affect the microstructure of the intermediate Bi4Ti3O12. ... |
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| Keywords: | two-step molten salt tabular barium titanate powder technology process |
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