| (Bi0.94(Na0.94-xLix))0.5Ba0.06TiO3压电陶瓷的电性能与微观结构 |
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| 引用本文： | 师金华,杨万民.(Bi0.94(Na0.94-xLix))0.5Ba0.06TiO3压电陶瓷的电性能与微观结构[J].华南师范大学学报(自然科学版),2011,0(4):75-0. |
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| 作者姓名： | 师金华 杨万民 |
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| 作者单位： | 1.1.宁夏大学 民族预科教育学院 |
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| 基金项目： | 国家自然科学基金重点项目，陕西省自然科学基金 |
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| 摘 要： | 采用传统陶瓷工艺制备了(Bi0.94(Na0.94-xLix))0.5Ba0.06TiO3(缩写为BNBT6 - xL)无铅压电陶瓷.研究了Li+取代A位Na+后,(Bi0.5Na0.5)0.94Ba0.06TiO3(缩写为BNBT6)陶瓷的物性变化.x在0.01 ～0.11之间变化,BNBT6陶瓷三方-四方共存的晶体...
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| 关 键 词： | 钛酸铋钠 压电性能 介电性能 微观结构 |
| 收稿时间： | 2011-03-03 |
ELECTRICAL PROPERTIES AND MICROSTRUCTURE OF ( Bi0.94 (Na0.94-xLix) ) 0.5 Ba0.06TiO3 PIEZOELECTRIC CERAMICS |
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| SHI Jinhua,YANG Wanmin.ELECTRICAL PROPERTIES AND MICROSTRUCTURE OF ( Bi0.94 (Na0.94-xLix) ) 0.5 Ba0.06TiO3 PIEZOELECTRIC CERAMICS[J].Journal of South China Normal University(Natural Science Edition),2011,0(4):75-0. |
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| Authors: | SHI Jinhua YANG Wanmin |
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| Abstract: | (Bi0.94 (Na0.94-xLix))0.5Ba0.06TiO3 (abbreviated as BNBT6-xL) lead-free piezoelectric ceramics have been studied for different lithium (x=0.01~0.11) substitutions. X-ray diffraction (XRD) data shows coexistence of rhombohedral and tetragonal phases. With the addition of Li+, The temperature dependence of the dielectric constant and dissipation factor shows that the piezoelectric properties and dielectric properties of BNBT6-xL ceramics change, BNBT6-xL ceramics are still relaxation ferroelectric, the transition temperature from ferroelectric to antiferroelectric phase (Td) decreases with the addition of Li+. When x=0.05, BNBT6-xL ceramics show quite good performance, piezoelectric constant (d33=128pC/N), coupling factor (kp = 0.30), dielectric constant (r=810). |
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