| Ce掺杂对BaTiO3陶瓷微观结构的影响 |
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| 引用本文： | 李伟,初瑞清,张开华,张杏园,王帅,刘西伟.Ce掺杂对BaTiO3陶瓷微观结构的影响[J].聊城师院学报,2009(3):53-55. |
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| 作者姓名： | 李伟 初瑞清 张开华 张杏园 王帅 刘西伟 |
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| 作者单位： | 聊城大学材料科学与工程学院,山东聊城252059 |
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| 基金项目： | 国家自然科学基金资助项目（No.50602021）;聊城大学科研基金资助项目（No.X0810041）;聊城大学大学生科技文化创新基金项目（SRT08005CL2） |
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| 摘 要： | 采用溶胶-凝胶法制备了稀土元素Ce掺杂的BaTi1-xCexO3（x=0.001,0.002,0.005,0.01）陶瓷.研究了Ce掺杂对BaTi1-xCexO3物相结构、晶粒生长和微观结构的影响.结果表明BaTi11-xCexO3为单一钙钛矿结构,随Ce掺杂量增加,晶格参数c/a逐渐减小;在烧结过程中,Ce掺杂可以抑制晶粒生长,有效的控制晶粒尺寸;陶瓷密度随Ce掺杂量增加而逐渐增大,最高可达理论密度的94.1%.
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| 关 键 词： | 钛酸钡 稀土 掺杂 晶粒 |
Microstructure of Ce-doped BaTiO_3 ceramics |
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| LI Wei,CHU Rui-qing,ZHANG Kai-hua,ZHANG Xing-yuan,WANG Shuai,LIU Xi-wei.Microstructure of Ce-doped BaTiO_3 ceramics[J].Journal of Liaocheng Teachers University(Natural Science Edition),2009(3):53-55. |
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| Authors: | LI Wei CHU Rui-qing ZHANG Kai-hua ZHANG Xing-yuan WANG Shuai LIU Xi-wei |
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| Affiliation: | (College of Materials Science and Engineering, Liaocheng University, Liaoeheng 252059,China) |
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| Abstract: | BaTiO3 ceramics doped with 0. 1, 0. 2, 0. 5 and 1 mol% Ce were prepared by sol-gel method. The effects of Ce doping on crystal structure, grain growth inhibition and microstructure of Ba- Ti1-xCexO3 ceramics were investigated. The results show that： All the powders calcined at 900 ℃ are perovskite structure with tetragonal phase. The crystal lattice parameters of BaTi1-xCexO3 ceramics are effeeted by the concentration of Ce, and c/a value decreases with increasing Ce-doping level. Homogeneous Ce incorporation in these materials allows a strong inhibition on grain growth. As the doping concentration increase, the grain growth of the BaTi1-xCexO3 ceramics is controlled efficiently. |
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| Keywords: | BaTiO3 rare earth doping grain growth |
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