无机材料学报 ›› 2014, Vol. 29 ›› Issue (1): 28-32.DOI: 10.3724/SP.J.1077.2014.12717

• 研究论文 • 上一篇    下一篇

Sn含量对PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3三元系压电陶瓷相结构和电性能的影响

王大伟1, 2, 3, 赵全亮1, 曹茂盛2, 崔 岩1, ZHANG Shu-Jun3   

  1. (1. 北方工业大学 机电工程学院, 北京100144; 2. 北京理工大学 材料学院, 北京100081; 3. Pennsylvania State University Materials Research Institute University Park, PA 16802, USA)
  • 收稿日期:2012-11-29 修回日期:2013-03-07 出版日期:2014-01-20 网络出版日期:2013-12-09
  • 基金资助:

    国家自然科学基金(50742007, 50972014, 51132002); 863项目(2007AA03Z103); 声纳与水声技术国防科技重点实验室基金(914C24KF0901)

Effect of Sn Content on the Phase Structure and Electrical Properties of PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3 Ternary Ceramics

WANG Da-Wei1, 2, 3, ZHAO Quan-Liang1, CAO Mao-Sheng2, CUI Yan1, ZHANG Shu-Jun3   

  1. (1. College of Mechanical and Electrical Engineering, North China University of Technology, Beijing 100144, China; 2. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; 3. Materials Research Institute, Pennsylvania State University, University Park, PA 16802, USA)
  • Received:2012-11-29 Revised:2013-03-07 Published:2014-01-20 Online:2013-12-09
  • Supported by:

    National Natural Science Foundation of China (50742007, 50972014, 51132002); National High-Technology Research and Development Program of China (2007AA03Z103); Key Laboratory Foundation of Sonar Technology of China (914C24KF0901)

摘要: 采用两步钶铁矿前驱体工艺制备了PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3(PSn-PMN-PT) 三元系压电陶瓷, 研究了Sn含量的变化对PSn-PMN-PT 三元系压电陶瓷结构和性能的影响。XRD结果表明, 所选成分均处于三方相和四方相共存的准同型相界上, 当Sn含量减少时, PSn-PMN-PT的XRD图谱基本没有发生变化, 而当Sn含量增加时, 在XRD图谱中逐渐出现烧绿石相。电性能研究表明, 缺失少量Sn可以提高PSn-PMN-PT的压电、介电和铁电性能, 减小损耗; 而添加过量Sn明显损害其压电和铁电性能, 增加损耗。缺失0.2mol%Sn的PSn-PMN-PT具有最佳的压电和铁电性能, d33: ~530 pC/N, kp: ~56.4%, Qm: ~570, εr: ~3070, tanδ: ~0.32%, Pr: ~28.9 μC/cm2, EC: ~8 kV/cm。

关键词: 压电陶瓷, PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3, 压电性能, 准同型相界

Abstract: PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3 (PSn-PMN-PT) ternary ceramics were successfully prepared by two-step columbite precursor method. The effects of Sn content on the phase structure and electrical properties of PSn-PMN-PT were investigated. X-ray powder diffraction (XRD) results indicated that all studied PSn-PMN-PT compositions located around the morphotropic phase boundary (MPB), with rhombohedral and tetragonal phases coexisted. With the decrease of Sn content, no change was observed in the XRD patterns of PSn-PMN-PT, while pyrochlore phase presented with excess Sn. The piezoelectric, dielectric and ferroelectric properties of PSn-PMN-PT were found to be improved with deficient Sn and deteriorate with increasing Sn content. In particular, the optimum piezoelectric and ferroelectric properties were achieved for PSn-PMN-PT ceramics with 0.2mol% deficient Sn, i.e. d33=~530 pC/N, kp=~56.4%, Qm=~570, εr=~3070, tanδ=~0.3%, Pr=~28.9 μC/cm2 and EC=~8 kV/cm.

Key words: piezoelectric ceramics, PbSnO3-Pb(Mg1/3Nb2/3)O3-PbTiO3, piezoelectric property, morphotropic phase boundary

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