...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Dielectric and piezoelectric studies of perovskite-tungsten bronze structured (1 - x)PLZT-xPBBiN nanoceramic composites by high-energy mechanical activation technique
【24h】

Dielectric and piezoelectric studies of perovskite-tungsten bronze structured (1 - x)PLZT-xPBBiN nanoceramic composites by high-energy mechanical activation technique

机译：高能机械活化技术研究钙钛矿-钨青铜结构的（1-x）PLZT-xPBBiN纳米陶瓷复合材料的介电和压电性能

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Polycrystalline (1-x)PLZT-xPBBiN ferroelectric complex ceramic nanocomposites were synthesized through high-energy mechanical activation technique. It is found that milling time has a significant impact on the phase formation, particle size and grain growth. The optimized compositions were subjected to XRD, SEM, dielectric and piezoelectric studies. Powder X-ray diffraction studies revealed that the nanocomposites consisted of both perovskite (tetragonal) and tungsten bronze (orthorhombic) structures whilst pure PLZT showed perovskite structure and pure PBBN showed tungsten bronze structure. As the PBBN content increased, the in situ prepared perovskite and tungsten bronze nanocomposites revealed a bi-phase formation. It is worth mentioning that crack-free nanoceramic composites were obtained. The maximum dielectric constant (epsilon_(RT) = 2509), piezoelectric planar coupling coefficient (k_p = 0.584) and the piezoelectric charge coefficient (d_(33) =596 pC/N) were observed for x = 0.6 nanoceramic composite. It has been observed that the dielectric and piezoelectric constants increased gradually with increasing x up to 0.6 and was found optimum, which could be ideal for electromechanical and energy harvesting applications.
机译：通过高能机械活化技术合成了多晶（1-x）PLZT-xPBBiN铁电复合陶瓷纳米复合材料。发现研磨时间对相形成，粒度和晶粒生长有显着影响。对优化的组合物进行XRD，SEM，介电和压电研究。粉末X射线衍射研究表明，纳米复合材料由钙钛矿（四方）和钨青铜（斜方晶）结构组成，而纯PLZT显示钙钛矿结构，而纯PBBN显示钨青铜结构。随着PBBN含量的增加，原位制备的钙钛矿和钨青铜纳米复合材料显示出双相形成。值得一提的是，获得了无裂纹的纳米陶瓷复合材料。对于x ＝ 0.6的纳米陶瓷复合材料，观察到最大介电常数（ε_（RT）＝ 2509），压电平面耦合系数（k_p ＝ 0.584）和压电电荷系数（d_（33）＝ 596pC / N）。已经观察到，介电常数和压电常数随着x的增加而逐渐增加到0.6，并且被发现是最佳的，这对于机电和能量收集应用可能是理想的。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号