| BiMnO_3改性BNT-BKT压电陶瓷的研究 |
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| 引用本文： | 成钧,周昌荣,刘心宇,杨华斌,陈国华.BiMnO_3改性BNT-BKT压电陶瓷的研究[J].人工晶体学报,2010,39(1):246-250. |
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| 作者姓名： | 成钧 周昌荣 刘心宇 杨华斌 陈国华 |
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| 作者单位： | 桂林电子科技大学广西信息材料重点实验室,桂林,541004 |
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| 基金项目： | 广西信息材料重点实验室主任基金(No.0710908-02-Z) |
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| 摘 要： | 为了提高BNT基压电陶瓷的电性能,采用传统的陶瓷制备方法,制备了一种Bi基的钙钛矿型无铅压电陶瓷 (1-x)Bi_(0.5)(Na_(0.82)K_(0.18))_(0.5)TiO_3-xBiMnO_3 (简写为BNKT-BMx).研究了Bi基铁电体BiMnO_3对该体系陶瓷微观结构和压电介电性能的影响.结果表明:在所研究的组成范围内陶瓷材料均能够形成纯钙钛矿固溶体,微量BiMnO_3不改变该体系陶瓷的晶体结构,但促进晶粒生长.随着BiMnO_3含量增加,低温介电反常峰消失,高温介电峰出现频率分散性.随BiMnO_3含量增加,压电常数d_(33)和机电耦合系数k_p先增加后降低,在x=0.01时,k_p=0.333,x=0.015时,d_(33)=170 pC/N,为该体系陶瓷压电性能的最优值.
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| 关 键 词： | BNT-BKT压电陶瓷 钛酸铋钠 钙钛矿结构 介电性能 |
Study on BNT-BKT Lead-free Piezoelectric Ceramics Modified by BiMnO_3 |
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| CHENG Jun,ZHOU Chang-rong,LIU Xin-yu,YANG Hua-bin,CHEN Guo-hua.Study on BNT-BKT Lead-free Piezoelectric Ceramics Modified by BiMnO_3[J].Journal of Synthetic Crystals,2010,39(1):246-250. |
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| Authors: | CHENG Jun ZHOU Chang-rong LIU Xin-yu YANG Hua-bin CHEN Guo-hua |
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| Institution: | Guangxi Key Laboratory of Information Materials;Guilin University of Electronic Technology;Guilin 541004;China |
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| Abstract: | A Bi-based perovskite-type lead-free piezoelectric ceramic,(1-x)Bi0.5(Na0.82K0.18)0.5TiO3-xBiMnO3,was prepared by conventional ceramic sintering technique to improve its electrical properties.The effect of BiMnO3 addition on microstructure,piezoelectric and dielectric properties were investigated.X-ray diffraction patterns indicate that the ceramics can form pure perovskite structure solid solutions.The BiMnO3 addition has no remarkable effect on the crystal structure,but promotes grain growth.The low abnor... |
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| Keywords: | BNT-BKT piezoelectric ceramics sodium bismuth titanate perovskites structure dielectric properties |
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