| CaBi_4Ti_4O_(15)高温无铅压电陶瓷的B位高价掺杂改性研究 |
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| 引用本文： | 郑敏贵,何新华,陈志武.CaBi_4Ti_4O_(15)高温无铅压电陶瓷的B位高价掺杂改性研究[J].稀有金属材料与工程,2009,38(Z2). |
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| 作者姓名： | 郑敏贵 何新华 陈志武 |
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| 作者单位： | 华南理工大学,广东,广州,510640 |
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| 摘 要： | 分别以V~(5+)、Nb~(5+)和W~(6+)离子对CaBi_4Ti_4O_(15)陶瓷进行B位取代,比较3种掺杂离子对CaBi_4Ti_4O_(15)陶瓷的烧结、介电和压电性能的影响.结果表明:3种离子的掺杂均能改善材料的烧结特性,提高瓷体致密度,同时降低高温电导率和损耗.V~(5+)掺杂可显著改善烧结性能,少量V~(5+)掺杂对居里温度影响不大,但可显著降低高温电导率和高温介电损耗.少量Nb~(5+)掺杂可有效提高材料的压电性能.W~(6+)掺杂对居里温度影响最为显著,使居里温度降低了30 ℃,但改性效果不如Nb~(5+)和V~(5+)明显.
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| 关 键 词： | 无铅压电陶瓷 居里温度 介电性能 电导率 |
Investigation on B-Site Substitution of High T_c Lead Free CaBi_4Ti_4O_(15) Ceramics |
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| Zheng Mingui,He Xinhua,Chen Zhiwu.Investigation on B-Site Substitution of High T_c Lead Free CaBi_4Ti_4O_(15) Ceramics[J].Rare Metal Materials and Engineering,2009,38(Z2). |
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| Authors: | Zheng Mingui He Xinhua Chen Zhiwu |
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| Affiliation: | Zheng Mingui,He Xinhua,Chen Zhiwu (South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | The substitution of V5+,Nb5+ and W6+ ions for B site of CaBi4Ti4O15 ceramics is performed,and the effect of these doping ions on the sintering behavior,dielectric and piezoelectric properties is investigated. It indicates that sintering characteristics and density of ceramics are enhanced and the conductivity and dielectric loss at high temperature are decreased by the addition of these dopants. The sintering behavior is improved remarkably by the substitution of V5+ ions. Small amount of V5+ ions has littl... |
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| Keywords: | Lead free piezoelectric Curie temperature dielectric properties conductivity |
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