| Bi0.5(Na1-xKx)0.5TiO3系陶瓷的压电性质与微观结构 |
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| 引用本文： | 赁敦敏,肖定全,朱建国,余萍,庄严.Bi0.5(Na1-xKx)0.5TiO3系陶瓷的压电性质与微观结构[J].电子元件与材料,2004,23(11):8-10. |
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| 作者姓名： | 赁敦敏 肖定全 朱建国 余萍 庄严 |
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| 作者单位： | 四川大学材料科学与工程学院材料科学系,四川,成都,610064;广州杰赛科技股份有限公司,广东,广州,510310 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金，国家高技术研究发展计划(863计划)，高等学校博士学科点专项科研项目，50410179，59972020，2001-AA325060，20030610035，，，， |
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| 摘 要： | 利用传统陶瓷工艺制备了Bi0.5(Na1-xKx)0.5TiO3系无铅压电陶瓷,研究了该陶瓷的压电性质与微结构。研究结果表明,Bi0.5(Na1-xKx)0.5TiO3陶瓷的压电常数d33=142.2 pC/N、机电耦合系数kp=0.315;随着K+含量的增加,陶瓷晶粒尺寸有细化的趋势;低K+含量时,陶瓷晶粒的“棱角”相当“钝化”,而高K+含量时,陶瓷晶粒的“棱角”明显而“尖锐”,K+促进了陶瓷晶粒在特定方向的生长;对Bi0.5(Na1-xKx)0.5TiO3陶瓷进行了A位离子改性研究,提出了新型的压电性质优良的BNT基无铅压电陶瓷体系。
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| 关 键 词： | 电子技术 钛酸铋钠 无铅压电陶瓷 压电性质 微观结构 |
| 文章编号： | 1001-2028(2004)11-0008-03 |
Piezoelectric Properties and Microstructure of Bi0.5(Na1-xKx)0.5TiO3 Piezoelectric Ceramics |
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| LIN Dun-min,XIAO Ding-quan,ZHU Jian-guo,YU Ping,ZHUANG Yan.Piezoelectric Properties and Microstructure of Bi0.5(Na1-xKx)0.5TiO3 Piezoelectric Ceramics[J].Electronic Components & Materials,2004,23(11):8-10. |
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| Authors: | LIN Dun-min XIAO Ding-quan ZHU Jian-guo YU Ping ZHUANG Yan |
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| Affiliation: | LIN Dun-min1,XIAO Ding-quan1,ZHU Jian-guo1,YU Ping1,ZHUANG Yan2 |
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| Abstract: | Bi0.5(Na1-xKx)0.5TiO3 ceramics were prepared by the conventional ceramic sintering technique. Piezoelectric properties and microstructures of Bi0.5(Na1-xKx)0.5TiO3 lead-free piezoelectric ceramics were studied in detail. The measurements of the piezoelectric properties of the ceramics show that the ceramics of the systems provide the piezoelectric performance: d33=142.2pC/N,kp=0.315. K suppresses the growing up of grains and promote the growth in some directions of crystalline grains. Those grains with high K concentration are smaller, and the grains are tetragonal in shape with sharp angles. Some A-site complex substituted Bi0.5(Na1-xKx)0.5TiO3 with better piezoelectric performance are developed. |
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| Keywords: | electronic technology Bi0 5(Na1-xKx)0 5TiO3 lead-free piezoelectric ceramics piezoelectric properties microstructure |
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