Sm2O3掺杂(Ba0.7Ca0.3)TiO3-Ba(Zr0.2Ti0.8)O3无铅压电陶瓷的制备与性能

doi:10.3724/SP.J.1077.2012.11517

无机材料学报 ›› 2012, Vol. 27 ›› Issue (7): 731-734.DOI: 10.3724/SP.J.1077.2012.11517

Sm₂O₃掺杂(Ba_0.7Ca_0.3)TiO₃-Ba(Zr_0.2Ti_0.8)O₃无铅压电陶瓷的制备与性能

崔业让¹, 刘心宇^1,2, 袁昌来^1,2, 翟霞¹, 胡耀斌¹, 李若雯¹

(1. 桂林电子科技大学广西信息材料重点实验室, 桂林 541004; 2. 中南大学材料科学与工程学院, 长沙 410083)

收稿日期:2011-08-16 修回日期:2011-10-05 出版日期:2012-07-20 网络出版日期:2012-06-06
作者简介:崔业让(1986-), 男, 硕士研究生. E-mail: cuicui612@126.com
基金资助:
广西省自然科学基金(2010GXNSFD013007); 广西信息材料重点实验室主任基金(桂科能0710908-15-Z)

Preparation and Properties of Sm₂O₃ Doped (Ba_0.7Ca_0.3)TiO₃-Ba(Zr_0.2Ti_0.8)O₃ Lead-free Piezoelectric Ceramics

CUI Ye-Rang¹, LIU Xin-Yu^1,2, YUAN Chang-Lai^1,2, ZHAI Xia¹, HU Yao-Bin¹, LI Ruo-Wen¹

(1. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin 541004, China; 2. College of Material Science and Engineering, Central South University, Changsha 410083, China)

Received:2011-08-16 Revised:2011-10-05 Published:2012-07-20 Online:2012-06-06
About author:CUI Ye-Rang. E-mail: cuicui612@126.com
Supported by:
Natural Science Foundation of Guangxi Province(2010GXNSFD013007); The Information Materials Key Laboratory Foundation of Guangxi (0710908-15-Z)

摘要/Abstract

摘要： 采用固相合成法制备了Sm₂O₃掺杂的(Ba_0.7Ca_0.3)TiO₃-Ba(Zr_0.2Ti_0.8)O₃(BCZT)无铅压电陶瓷. 借助XRD、SEM等手段对该陶瓷的显微结构与电性能进行了研究. 结果表明, Sm₂O₃的掺杂降低了BCZT无铅压电陶瓷的烧结温度并使居里温度点T_c从85℃提高到95℃. 当Sm₂O₃掺杂量为0.02wt%~0.1wt%时, 样品具有典型ABO₃型钙钛矿结构. Sm₂O₃掺杂量为0.02wt%时, 所得陶瓷样品具有最优综合电性能, 其压电常数d₃₃、机电耦合系数k_p、机械品质因子Q_m、介电损耗tanδ和介电常数ε_r分别为590 pC/N、0.52、43、1.3%和3372.

关键词: 无铅压电陶瓷, Sm₂O₃, 压电性能, 钙钛矿

Abstract: Sm₂O₃ doped (Ba_0.7Ca_0.3)TiO₃-Ba(Zr_0.2Ti_0.8)O₃ (BCZT) lead-free piezoelectric ceramics were prepared by solid state synthesis method. The microstructure and electrical properties of prepared ceramics were investigated by XRD, SEM and other techniques. The results demonstrate that Sm₂O₃ doping reduces sintering temperature of BCZT lead-free piezoelectric ceramics and increases the Curie temperature Tc from 85℃ to 95℃. BCZT ceramics doped with 0.02wt%-0.1wt% Sm₂O₃ possess a typical ABO₃ type perovskite structure.With the doping of 0.02wt% Sm₂O₃, the BCZT ceramics show the optimum electrical properties, and its piezoelectric constant d33, electromechanical coupling factor k_p, mechanical quality factor Qm, dielecteic loss tanδ and relative dielectric constant ε_r reach 590 pC/N, 0.52, 43, 1.3% and 3372, respectively.

Key words: lead-free piezoelectric ceramics, Sm₂O₃, piezoelectric property, perovskite

中图分类号:

TQ174

崔业让, 刘心宇, 袁昌来, 翟霞, 胡耀斌, 李若雯. Sm₂O₃掺杂(Ba_0.7Ca_0.3)TiO₃-Ba(Zr_0.2Ti_0.8)O₃无铅压电陶瓷的制备与性能[J]. 无机材料学报, 2012, 27(7): 731-734.

CUI Ye-Rang, LIU Xin-Yu, YUAN Chang-Lai, ZHAI Xia, HU Yao-Bin, LI Ruo-Wen. Preparation and Properties of Sm₂O₃ Doped (Ba_0.7Ca_0.3)TiO₃-Ba(Zr_0.2Ti_0.8)O₃ Lead-free Piezoelectric Ceramics[J]. Journal of Inorganic Materials, 2012, 27(7): 731-734.

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Sm₂O₃掺杂(Ba_0.7Ca_0.3)TiO₃-Ba(Zr_0.2Ti_0.8)O₃无铅压电陶瓷的制备与性能

Preparation and Properties of Sm₂O₃ Doped (Ba_0.7Ca_0.3)TiO₃-Ba(Zr_0.2Ti_0.8)O₃ Lead-free Piezoelectric Ceramics

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