0.13BZT-xBS-(0.87-x) PT压电陶瓷的电学性能及其温度稳定性
Electrical Properties and Their Temperature Stability of 0.13BZT-xBS-(0.87-x)PT Piezoelectric Ceramics
摘 要
采用固相反应法制备了0.13Bi （Zn1/2Ti1/2） O3-xBiScO3-（0.87-x） PbTiO3[0.13BZT-xBS-（0.87-x） PT] （0.28≤x≤0.36）压电陶瓷，研究了陶瓷的微观结构、电学性能及其温度稳定性。结果表明：随着x的增大，陶瓷由四方相转变为三方相结构，当x不低于0.34时，出现了Bi38ZnO60析出相；随着x的增大，陶瓷的剩余极化强度Pr、压电常数d33、机电耦合系数kp和相对介电常数εr均先增大后减小，居里温度Tc降低，当x为0.32时，陶瓷的综合电学性能最优，Pr，d33，kp，εr最大，分别为31.5 μC·cm-2，283 pC·N-1，0.37，1 840，Tc较高，为380℃。在室温至300℃的温度范围，当x为0.32时，d33随温度的变化率几乎为0，此时陶瓷的压电性能对温度不敏感，具有良好的温度稳定性。
微观结构
电学性能
温度稳定性
BZT-BS-PT ceramics
microstructure
electrical property
temperature stability
Abstract
0.13Bi(Zn1/2Ti1/2)O3-xBiScO3-(0.87-x)PbTiO3[0.13BZT-xBS-(0.87-x)PT] (0.28 ≤ x ≤ 0.36) piezoelectric ceramics were prepared by solid-state reaction method, and the microstructure and electrical properties and their temperature stability of ceramics were studied. The results show that the ceramic structure transformed from tetragonal to rhombohedral phase with increasing x; when x was not smaller than 0.34, Bi38ZnO60 precipitates appeared. With the increase of x, the remanent polarization Pr, the piezoelectric constant d33, the electromechanical coupling coefficient kp and the relative dielectric constant εr of the ceramics all increased first and then decreased, and the Curie temperature Tc decreased. When x was 0.32, the comprehensive electrical properties of the ceramics was the best; the ceramics had the largest Pr, d33, kp and εr of 31.5 μC·cm-2, 283 pC· N-1, 0.37, 1 840, respectively, and relatively high Tc of 380℃. In the temperature range from room temperature to 300℃, when x was 0.32, the change rate of d33 with temperature was almost zero; at this time, the piezoelectric properties of the ceramics were not sensitive to temperature, and had good temperature stability.
中图分类号 TM282 DOI 10.11973/jxgccl202309003
所属栏目 试验研究
基金项目 国家自然科学基金联合基金资助项目（U2037603）
收稿日期 2022/7/27
修改稿日期 2023/7/27
网络出版日期
作者单位点击查看
备注张明志(1998-),男,安徽合肥人,硕士研究生
引用该论文: ZHANG Mingzhi,WANG Yiping,QIAN Pai,HU Querui,WANG Jiakang,YANG Ying. Electrical Properties and Their Temperature Stability of 0.13BZT-xBS-(0.87-x)PT Piezoelectric Ceramics[J]. Materials for mechancial engineering, 2023, 47(9): 14～18
张明志,王一平,钱派,胡悫睿,王加康,杨颖. 0.13BZT-xBS-(0.87-x) PT压电陶瓷的电学性能及其温度稳定性[J]. 机械工程材料, 2023, 47(9): 14～18
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【5】KIMURA M, ANDO A, MAURYA D, et al.Lead zirconate titanate-based piezoceramics[M]//Advanced Piezoelectric Materials.Amsterdam:Elsevier, 2017:95-126.
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【7】EITEL R E, RANDALL C A, SHROUT T R, et al.New high temperature morphotropic phase boundary piezoelectrics based on Bi(Me)O3-PbTiO3 ceramics[J].Japanese Journal of Applied Physics, 2001, 40(10R):5999.
【8】EITEL R E, ZHANG S J, SHROUT T R, et al.Phase diagram of the perovskite system (1-x)BiScO3-xPbTiO3[J].Journal of Applied Physics, 2004, 96(5):2828-2831.
【9】RANDALL C A, EITEL R, JONES B, et al.Investigation of a high Tc piezoelectric system:(1-x)Bi(Mg1/2Ti1/2)O3-(x)PbTiO3[J].Journal of Applied Physics, 2004, 95(7):3633-3639.
【10】XUE L, WEI Q A, WANG Z J, et al.Electrical properties of Sb2O3-modified BiScO3-PbTiO3-based piezoelectric ceramics[J].RSC Advances, 2020, 10(23):13460-13469.
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【13】HU Q R, YANG Y, WANG Y P, et al.Thermal stability of xBiScO3-(1-x-y)PbZrO3-yPbTiO3 ternary piezoelectric system with enhanced piezoelectric and dielectric properties[J].Ceramics International, 2018, 44(6):6817-6822.
【14】SUCHOMEL M R, DAVIES P K.Enhanced tetragonality in (x)PbTiO3-(1-x)Bi(Zn1/2Ti1/2)O3 and related solid solution systems[J].Applied Physics Letters, 2005, 86(26):262905.
【15】LIU Z, ZHAO C L, LI J F, et al.Large strain and temperature-insensitive piezoelectric effect in high-temperature piezoelectric ceramics[J].Journal of Materials Chemistry C, 2018, 6(3):456-463.
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