温度对无铅换能器陶瓷BNT-7BT铁电性的影响
作者:
作者单位:

作者简介:

通讯作者:

基金项目:

国家自然科学基金NSAF联合基金资助项目(U1230116)

伦理声明:



Effect of Temperature on the Ferroelectricity of Leadfree Transducer Ceramics BNT-7BT
Author:
Ethical statement:

Affiliation:

Funding:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    传统换能器材料——PZT95/5铁电陶瓷中的铅元素对环境污染大,且其电致应变(S)和压电系数(d33)较小,因此限制了换能器的输出功率。该文从保护环境和优化换能器性能的角度出发,研制出位于准同型相界处的无铅铁电陶瓷0.93Bi0.5Na0.5TiO3-0.07BaTiO3(BNT-7BT),测试了其晶体结构和介电温谱曲线,并得到了温度对该陶瓷电滞回线及电致应变曲线的影响。实验结果表明,钙钛矿结构的无铅铁电陶瓷BNT7BT在152 ℃处发生铁电→反铁电相变,且其具有较大的电致应变量(室温下S≈2.92‰)和较高的压电系数 (d33=152 pC/N)。

    Abstract:

    The lead elements in the conventional PZT95/5 ferroelectric ceramic material for transducer have great pollution to the environment, and its electrostrictive strain S and piezoelectric constant d33 are small, the output power of transducer is limited. From the perspective of protecting environment and improving the performance of transducers, we have prepared leadfree ferroelectric ceramics 0.93Bi0.5Na0.5TiO3-0.07BaTiO3(BNT-7BT) which located in the morphotropic phase boundary (MPB). The crystal structure and dielectric temperature curve have been tested. The effect of temperature on its hysteresis loops and electrostrictivestrain loops have already been investigated. The results indicate that the ferroelectric to antiferroelectric phase transition of the prepared leadfree ferroelectric ceramics BNT7BT with perovskite structure occurs at 152 ℃.In addition, the BNT7BT has large electrostrictive strain (S≈2.92‰ at room temperature) and high piezoelectric constants (d33=152 pC/N).

    参考文献
    相似文献
    引证文献
引用本文

刘阳, 许学忠, 方厚林, 张芳, 张亮永.温度对无铅换能器陶瓷BNT-7BT铁电性的影响[J].压电与声光,2017,39(1):23-26. LIU Yang, XU Xuezhong, FANG Houlin, ZHANG Fang, ZHANG Liangyong. Effect of Temperature on the Ferroelectricity of Leadfree Transducer Ceramics BNT-7BT[J]. PIEZOELECTRICS AND ACOUSTOOPTICS

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2017-02-14
  • 出版日期: