采用传统陶瓷制备方法,制备了系列新型无铅压电陶瓷材料(1-x-y)Bi0.5Na0.5TiO3-xBi0.5K0.5TiO3-yBiFeO3(简写为BNT-BKT-BF-x/y).研究了该体系陶瓷微观结构、压电性能和退极化温度变化规律.结果表明:在所研究的组成范围内,所制备的材料均能够形成纯钙钛矿固溶体,陶瓷三方、四方共存的准同型相界(MPB)成分为x=0.18～0.21,y=0～0.05,在准同型相界成分附近该体系陶瓷压电性能达到最大值:d33=171pC/N,kp=0.366.采用平面机电耦合系数kp和极化相位角θmax与温度的关系来确定退极化温度,得到的结果基本相同,陶瓷的退极化温度随BF含量的增加一直降低,随BKT含量的增加先降低后升高.
参考文献
| [1] | Jarupoom P;Pengpat K;Pisitpipathsin N et al.Development of Electrical Properties in Lead-free Bismuth Sodium Lanthanum Titanate-barium Titanate Ceramic near the Morphotropic Phase Boundary[J].Current Applied Physics,2008,8:253-257. |
| [2] | Zhou CR;Liu XY .Effect of B-site substitution of complex ions on dielectric and piezoelectric properties in (Bi1/2Na1/2)TiO3 piezoelectric ceramics[J].Materials Chemistry and Physics,2008(2/3):413-416. |
| [3] | Liao YW;Xiao DQ;Lin DM;Zhu JG;Yu P;Wu L;Wang XP .The effects of CeO2-doping on piezoelectric and dielectric properties of Bi-0.5(Na1-x-yKxLiy)(0.5)TiO3 piezoelectric ceramics[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2006(1/3):172-176. |
| [4] | 杨桂华,周昌荣,刘心宇.（Na1/2Bi1/2）TiO3-（Na1/2Bi1/2）（Zn1/3Nb2/3）O3无铅压电陶瓷的介电特性研究[J].人工晶体学报,2008(02):399-402,375. |
| [5] | Zhao SC;Li GR;Ding AL;Wang TB;Yin QR .Ferroelectric and piezoelectric properties of (Na, K)(0.5)Bi0.5TiO3 lead free ceramics[J].Journal of Physics, D. Applied Physics: A Europhysics Journal,2006(10):2277-2281. |
| [6] | Li Y M;Chen W;Zhou J et al.Dielectric and Ferroelectrics Properties of Lead-free Na0.5Bi0 5TiO3-K0 5Bi0 5TiO3 Ferroelectric Ceramics[J].Ceramics International,2005,31:139-142. |
| [7] | Takenaka T;Maruyama K;Sakata K .Bi1/2Na1/2TiO3-BaTiO3 System for Lead-free Piezoelectric Ceramics[J].Japanese Journal of Applied Physics,1991,30(9B):2236-2239. |
| [8] | Li YM;Chen W;Xu Q;Zhou J .Relaxor behavior and ferroelectric properties of Na0.5Bi0.5TiO3-K0.5Bi0.5TiO3-KNbO3 lead-free ceramics[J].Journal of Materials Science,2005(14):3625-3628. |
| [9] | Mankang Zhu;Liying Liu;Yudong Hou .Microstructure and Electrical Properties of MnO-Doped (Na_(0.5)Bi_(0.5))_(0.92)Ba_(0.08)Ti0_3 Lead-Free Piezoceramics[J].Journal of the American Ceramic Society,2007(1):120-124. |
| [10] | Lin D;Kwok KW;Chan HLW .Structure and electrical properties of Bi0.5Na0.5TiO3-BaTiO3-Bi0.5Li0.5TiO3 lead-free piezoelectric ceramics[J].Solid state ionics,2008(37/38):1930-1937. |
| [11] | 张琼,苗鸿雁,谈国强.BiFeO3薄膜研究进展[J].硅酸盐通报,2007(01):118-122. |
| [12] | Zhou CR;Liu XY .Dielectric and piezoelectric properties of bismuth-containing complex perovskite solid solution of Bi1/2Na1/2TiO3-Bi(Mg2/3Nb1/3)O-3[J].Journal of Materials Science,2008(3):1016-1019. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%