| La~(3+)掺杂Bi_(0.5)(Na_(1-x-y)K_xLi_y)_(0.5)TiO_3陶瓷的微结构与电学性能 |
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| 引用本文： | 廖运文.La~(3+)掺杂Bi_(0.5)(Na_(1-x-y)K_xLi_y)_(0.5)TiO_3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),2008,29(3). |
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| 作者姓名： | 廖运文 |
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| 作者单位： | 化学应用与污染控制技术四川省教育厅重点实验室,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： | 利用传统的电子陶瓷工艺制备了La^3＋掺杂Bi0．5（Na1-x-yKxLiy）0．5TiO3无铅压电陶瓷，研究了La^3＋掺杂对该体系陶瓷的介电压电性能与微观结构的影响．结果表明，少量的La^3＋掺杂可以改善该陶瓷的微结构；当掺杂量为0．1％时，该陶瓷体系的压电性能有较大的改善，室温下该体系配方的压电常数d33可达215pC／N，径向机电耦合系数kp达到37．4％，但同时介电损耗增大，机械品质因子降低．当掺杂量达到1．5％以后，陶瓷的压电性能严重下降．
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| 关 键 词： | 无铅压电陶瓷 Bi0．5（Na1-x-yKxLiy）0．5TiO3 La^3＋掺杂 压电常数 机电耦合系数 |
Electrical Properties and Microstructure of La~(3+)-Doped Bi_(0.5)(Na_(1-x-y)K_xLi_y)_(0.5)TiO_3 Lead-Free Piezoelectric Ceramics |
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| LIAO Yun-wen.Electrical Properties and Microstructure of La~(3+)-Doped Bi_(0.5)(Na_(1-x-y)K_xLi_y)_(0.5)TiO_3 Lead-Free Piezoelectric Ceramics[J].Journal of China West Normal University:Natural Science Edition,2008,29(3). |
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| Authors: | LIAO Yun-wen |
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| Institution: | LIAO Yun-wen(College of Chemistry , Chemical Engineering,China West Normal University,Nanchong 637002,China) |
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| Abstract: | La3+-doped Bi0.5(Na0.725K0.175Li0.10)0.5TiO3 lead-free piezoelectric ceramics were prepared by traditional electronic ceramics processes.The effect of La3+-doping on the dielectric and piezoelectric properties and microstructure of the ceramics has been investigated.SEM observation indicates that doping with a small amount of La3+ can improve the microstructure of the ceramics.The results indicate that La3+-doping can greatly improve the piezoelectric properties of Bi0.5(Na0.725K0.175Li0.10)0.5TiO3 ceramics... |
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| Keywords: | lead-free piezoelectric ceramics La3+-doping piezoelectric constant electromechanical coupling factor |
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