| 熔盐法合成片状BaBi_4Ti_4O_(15)粉体 |
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| 引用本文： | 李华萍,张栋杰. 熔盐法合成片状BaBi_4Ti_4O_(15)粉体[J]. 硅酸盐学报, 2009, 37(12): 1964-1969 |
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| 作者姓名： | 李华萍 张栋杰 |
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| 作者单位： | 南京师范大学环境与科学学院;南京师范大学材料科学重点实验室,南京,210097 |
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| 基金项目： | 江苏省普通高校自然科学研究计划项目 |
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| 摘 要： | 以NaCl-KCl作为熔剂,采用熔盐法首次合成了(0010)晶面择优取向的片状BaBi_4Ti_4O_(15)粉体.研究了预烧温度及熔盐含量等因素对粉体显微形貌的影响,分析了这些因素对BaBi_4Ti_4O_(15)粉体沿(0010)面取向生长的影响.结果表明:随着预烧温度的升高及时间的延长,颗粒粒径尺寸不断增加,(0010)衍射峰强度先增强后减弱.当熔盐与原料的质量比R≠1时,随熔盐含量增加颗粒粒径尺寸先增大后减小;当R=1时,1 050℃预烧4h后得到的片状粉体呈(0010)面取向,粒径分布均匀,平均粒径约5.9μm,厚0.5μm.
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| 关 键 词： | 掺铋钛酸钡粉体 片状结构 熔盐法 取向生长 |
SYNTHESIS OF PLATED-LIKE BaBi_4Ti_4O_(15) POWDER BY MOLTEN SALT METHOD |
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| LI Huaping,ZHANG Dongjie. SYNTHESIS OF PLATED-LIKE BaBi_4Ti_4O_(15) POWDER BY MOLTEN SALT METHOD[J]. Journal of The Chinese Ceramic Society, 2009, 37(12): 1964-1969 |
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| Authors: | LI Huaping ZHANG Dongjie |
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| Abstract: | Plated-like BaBi_4Ti_4O_(15) powder with grain oriented growth along (0010) plane was synthesized by molten salt method using NaCl-KCl as flux. The effects of calcining temperature and mass ratio of salt to raw materials(R) on the micromorphology of BaBi_4Ti_4O_(15) powders and the growth of BaBi_4Ti_4O_(15) with (0010) plane oriented were investigated. The results show that the BaBi_4Ti_4O_(15) particle size increases and the intensity of (0010) plane first increases then lowers with the increasing of calcination tem-perature. The particle size first increases and then minishes when R≠1, The (0010) plane oriented BaBi_4Ti_4O_(15) powders with good micromorphologies are obtained when R= 1, after calcining at 1 050 ℃ for 4h. The grain distributed uniformly has an average size of about 6 μm and a thickness of 0.5 μm. |
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| Keywords: | barium titanate doped bismuth powder flake structure molten salt method oriented growth |
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