An Approach to Improve the Piezoelectric Property of (Bi0.5Na0.5)TiO3-(Bi0.5K0.5)TiO3-BaTiO3 Lead-Free Ceramics

被引：27
|
作者：
Dai, Ye-Jing [1 ]
Zhang, Xiao-Wen [1 ]
Chen, Ke-Pi [2 ]
机构：
[1] Tsinghua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] N China Elect Power Univ, Minist Educ, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China
来源：
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY | 2011年 / 8卷 / 02期
关键词：
MORPHOTROPIC PHASE-BOUNDARY; FERROELECTRIC PROPERTIES; ELECTRICAL-PROPERTIES; SYSTEM;
D O I：
10.1111/j.1744-7402.2009.02436.x
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Lead-free piezoelectric ceramics of an a(Bi0.5Na0.5)TiO3-b(Bi0.5K0.5)TiO3-cBaTiO(3) (BNBK) ternary system close to the composition of MPB have been widely investigated in recent decades. In this research, the MPB Linear Combination Rule (LCR) is introduced to explore the ternary system of lead-free piezoelectric ceramics for the first time, and the best properties of d(33)=220 pC/N, k(p)=0.31, k(t)=0.476, T-d=157 degrees C, and epsilon(r)=1648 are obtained for a composition with a/b/c=85.25/10.995/3.755. It is suggested that BNBK with the composition (85.25/10.995/3.755) is a candidate material for lead-free applications. Moreover, the LCR of MPB is an effective method, applicable to lead-free ceramics to search for an optimal composition with excellent properties.
引用
收藏
页码：423 / 429
页数：7
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