| 无铅Bi0．5（Na0．90-xKxLi0．10）0．5TiO3-NaNbO3压电陶瓷的微结构与电学性能 |
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| 引用本文： | 廖运文.无铅Bi0．5（Na0．90-xKxLi0．10）0．5TiO3-NaNbO3压电陶瓷的微结构与电学性能[J].西华师范大学学报(哲学社会科学版),2009,30(2):160-164. |
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| 作者姓名： | 廖运文 |
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| 作者单位： | 四川省化学应用与污染控制技术重点实验室,西华师范大学化学化工学院,四川南充637002 |
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| 基金项目： | 四川省教育厅重点项目(2006A075) |
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| 摘 要： | 采用传统陶瓷工艺制备了Bi0.5（Na0.90-xKxLi0.10）0.5TiO3-NaNbO3无铅压电陶瓷，利用XRD、SEM等测试技术分析表征了陶瓷的结构、表面形貌、介电、压电与铁电性能．研究结果表明，该体系陶瓷具有单相钙钛矿结构，NaNbO3的引入使Bi0．5（Na0．90-xKxLi0.10）0.5TiO3体系的相界发生了移动；随着钾含量的增加，NaNbO3对体系性能的影响越明显．在室温下，该体系表现出较好的压电与铁电性能：压电常数d33和机电耦合系数kp分别达到174pC／N和29．6％，陶瓷样品表现出明显的铁电体特征，剩余极化强度达到33．4μC／cm^2．
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| 关 键 词： | 无铅压电陶瓷 压电性能 介电性能 铁电性能 |
Microstructure and Electrical Properties of Bi_(0.5)(Na_(0.90-x)K_xLi_(0.10))_(0.5)TiO_3-NaNbO_3 Lead-free Piezoelectric Ceramics |
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| LIAO Yun-wen.Microstructure and Electrical Properties of Bi_(0.5)(Na_(0.90-x)K_xLi_(0.10))_(0.5)TiO_3-NaNbO_3 Lead-free Piezoelectric Ceramics[J].Journal of China West Normal University:Natural Science Edition,2009,30(2):160-164. |
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| Authors: | LIAO Yun-wen |
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| Institution: | Laboratory of Applied Chemistry and Pollution Control Technology of Sichuan Province;College of Chemistry and Chemical Engineering;China West Normal University;Nanchong;637002 china |
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| Abstract: | Lead-free piezoelectric ceramics,Bi0.5(Na1-x-yKxLiy)0.5TiO3-NaNbO3 were fabricated by conventional electric ceramics processes,and the microstructure,dielectric,piezoelectric and ferroelectric properties of the ceramics were investigated.X-ray diffraction patterns show that Bi0.5(Na1-x-yKxLiy)0.5TiO3-NaNbO3 can form a solid solution during sintering.With the addition of NaNbO3,the dielectric,piezoelectric and ferroelectric properties of the ceramics strongly depend on the amount of K+.At room temperature,th... |
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| Keywords: | bismuth-sodium titanate lead-free piezoelectric ceramics piezoelectric property microstructure |
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