| (Zn_(1/3)Nb_(2/3))~(4+)取代的BNT系无铅压电陶瓷性能 |
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| 引用本文： | 单召辉,刘心宇,周昌荣.(Zn_(1/3)Nb_(2/3))~(4+)取代的BNT系无铅压电陶瓷性能[J].电子元件与材料,2008,27(5):32-34. |
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| 作者姓名： | 单召辉 刘心宇 周昌荣 |
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| 作者单位： | 1. 桂林电子科技大学,信息材料科学与工程系,广西,桂林,541004
2. 桂林电子科技大学,信息材料科学与工程系,广西,桂林,541004;中南大学,材料科学与工程学院,湖南,长沙,410083 |
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| 摘 要： | 采用两步合成工艺,制备了新型Bi1/2Na1/2Ti1–x(Zn1/3Nb2/3)xO3(简称BNTZN—100x)系无铅压电陶瓷。研究了B位复合离子(Zn1/3Nb2/3)4+取代量对BNT陶瓷介电及压电性能的影响。结果表明:当0.005≤x≤0.020时,该体系陶瓷具有三方、四方共存的准同型相界(MPB)结构。在MPB附近,具有较佳的压电性能:当x为0.020时,d33为97pC/N,kt为0.47。εr-t曲线显示该体系材料具有明显的弥散相变特征。具有高kt值,低kp值;kt/kp较大,具有较大的各向异性,是一种适合高频下使用的优良超声换能材料。
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| 关 键 词： | 无机非金属材料 无铅压电陶瓷 复合离子 钛酸铋钠 (Zn1/3Nb2/3)4+ |
| 文章编号： | 1001-2028(2008)05-0032-03 |
| 修稿时间： | 2007年12月22 |
Properties of (Zn_(1/3)Nb_(2/3))~(4+) substituted BNT system lead-free piezoelectric ceramics |
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| SHAN Zhao-hui,LIU Xin-yu,ZHOU Chang-rong.Properties of (Zn_(1/3)Nb_(2/3))~(4+) substituted BNT system lead-free piezoelectric ceramics[J].Electronic Components & Materials,2008,27(5):32-34. |
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| Authors: | SHAN Zhao-hui LIU Xin-yu ZHOU Chang-rong |
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| Affiliation: | SHAN Zhao-hui1,LIU Xin-yu1,2,ZHOU Chang-rong1,2 (1. Department of Information Material Science , Engineering,Guilin University of Electronic Technology,Guilin 541004,Guangxi Zhuangzu Zizhiqu,China,2. College of Material Science , Engineering,Central South University,Changsha 410083,China ) |
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| Abstract: | A new lead-free piezoelectric ceramics of Bi1/2Na1/2Ti1–x(Zn1/3Nb2/3)xO3(abbreviate as BNTZN—100x) were prepared by the two-steps synthesized method and the effect of B-site the complex ions-(Zn1/3Nb2/3)4+ substitution amount on the piezoelectric and dielectric properties was investigated. This system ceramics have trigonal tetragonal coexisted quasi-homotypic phase boundary(MPB) structure when x = 0.005～0.020. The ceramics with composition near the MPB exhibit improved piezoelectric properties and the favorable properties of d33 = 97 pC/N and kt= 0.47 are obtained at x = 0.020. The dielectric constants as a function of temperature at uniform frequencies show obvious relaxor characteristic. The results show that Bi1/2Na1/2Ti1–x(Zn1/3Nb2/3)xO3 ceramics are good candidate for use as ultrasonic transducer ceramics because their kt / kp value is high. |
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| Keywords: | non-metallic inorganic material lead-free piezoelectric ceramics complex ions sodium-bismuth titanate (Zn1/3Nb2/3)4+ |
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