| Mn改性Na0.5Bi2.5Nb2O9高温压电陶瓷的研究 |
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| 引用本文： | 江向平,温佳鑫,陈超,涂娜,李小红. Mn改性Na0.5Bi2.5Nb2O9高温压电陶瓷的研究[J]. 无机材料学报, 2012, 0(8): 827-832 |
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| 作者姓名： | 江向平 温佳鑫 陈超 涂娜 李小红 |
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| 作者单位： | 景德镇陶瓷学院材料工程系江西省先进陶瓷材料重点实验室 |
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| 基金项目： | 国家自然科学基金(50862005、51062005、91022027);江西省高等学校“先进陶瓷材料”科技创新团队;江西省主要学科学术和技术带头人培养对象计划项目(2010DD00800);江西省教育厅项目(GJJ11196、GJJ11197、GJJ11204)~~ |
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| 摘 要： | 采用固相法获得了Mn改性的Na0.5Bi2.5Nb2O9(NBN+xmol%MnCO3,0≤x≤10.0)铋层状压电陶瓷,并系统地研究了Mn(掺杂)对NBN基陶瓷显微结构与电性能的影响.结果表明,所有获得的样品都是居里点在700℃以上的单一相铁电体.加入Mn显著地提高了NBN系列陶瓷的机械品质因素Qm,明显改善了陶瓷的压电与机电性能.当MnCO3掺杂量为8.0mol%时,陶瓷获得最佳电性能:tanδ=0.749%,d33=20 pC/N,Qm=3120,kp=12.37%,kt=21.09%,Pr=7.01μC/cm2.NBN+xmol%MnCO3(x=8.0)陶瓷经700℃退极化处理后,其d33保持为原来的75%(~15 pC/N),表明该材料在高温领域下具有良好的应用前景.
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| 关 键 词： | 压电陶瓷 微观结构 机电性能 铁电性能 Na0.5Bi2.5Nb2O9 |
Piezoelectric Properties of Mn-modified Na0.5Bi2.5Nb2O9 for High Temperature Applications |
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| JIANG Xiang-Ping,WEN Jia-Xin,CHEN-Chao,TU-Na,LI Xiao-Hong. Piezoelectric Properties of Mn-modified Na0.5Bi2.5Nb2O9 for High Temperature Applications[J]. Journal of Inorganic Materials, 2012, 0(8): 827-832 |
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| Authors: | JIANG Xiang-Ping WEN Jia-Xin CHEN-Chao TU-Na LI Xiao-Hong |
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| Affiliation: | (Jiangxi Key Laboratory of Advanced Ceramic Materials,Department of Material Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333001,China) |
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| Abstract: | Bismuth layer-structured ferroelectric ceramics Na0.5Bi2.5Nb2O9(NBN+xmol% MnCO3,0≤x≤10.0) were synthesized by traditional solid state reaction.The effects of Mn addition on the microstructure and electrical properties of ceramics were investigated in detail.The results showed that all the ceramic samples were single-phase ferroelectrics with high Curie points(Tc≥700℃).With the addition of MnCO3,the mechanical quality factor,piezoelectric activity and electromechanical properties of Na0.5Bi2.5Nb2O9-based ceramics are enhanced significantly.Besides,the NBN+8.0mol% MnCO3ceramic exhibits the optimum electrical properties: tanδ=0.749%,d33=20 pC/N,Qm=3120,kp=12.37%,kt=21.09%,Pr=7.01 μC/cm2.After annealing at 700℃,the d33 value of NBN+8.0mol% MnCO3 ceramic remains 75%(~15 pC/N),which indicates that this ceramic is a promising material for high temperature applications. |
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| Keywords: | piezoelectric ceramics microstructure electromechanical properties ferroelectric properties Na0.5Bi2.5Nb2O9 |
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