0.06BiYbO3-0.94Pb(Zr0.48Ti0.52)O3三元系压电陶瓷的氧化物掺杂改性研究

周治; 王艺颖; 周华将; 雷丽勤; 王金秀; 陈渝

硅酸盐通报, 2022, 41 (3): 1020, 网络出版: 2022-08-03

0.06BiYbO₃-0.94Pb(Zr_0.48Ti_0.52)O₃三元系压电陶瓷的氧化物掺杂改性研究

Doping Effects of Oxides on 0.06BiYbO₃-0.94Pb(Zr_0.48Ti_0.52)O₃ Ternary Piezoceramics

论文大纲

周治 ^1,*王艺颖 ¹周华将 ¹雷丽勤 ¹王金秀 ¹陈渝 ^1,2

作者单位

¹ 成都大学机械工程学院, 成都 610106

² 四川大学, 深地科学与工程教育部重点实验室, 成都 610065

摘要

针对新一代声波测井仪器对其核心元件压电陶瓷兼具高居里温度、高压电系数以及高稳定性要求的迫切需求, 本文采用传统的固相反应-无压烧结技术制备了一种0.06BiYbO3-0.94Pb(Zr0.48Ti0.52)O3(BY-PZT)三元系压电陶瓷, 并研究了四种氧化物掺杂对其微观结构及电学性能的影响。由XRD和SEM表征可知所有样品均呈纯四方相钙钛矿结构, 掺杂Cr2O3的样品平均晶粒尺寸最大。介电温谱和谐振频谱研究证实四种氧化物掺杂均能提高其介电性能的温度稳定性。掺杂La2O3的样品介电常数温度系数(Tkε)最低, 掺杂MnO2的样品机械品质因素(Qm)最高, 而掺杂CeO2的样品抗热退极化性能最好。高温复阻抗(Cole-Cole图)分析表明, Cr2O3掺杂能够显著提高BY-PZT陶瓷的高温电阻率, 陶瓷在高温下的电导行为主要由晶界响应控制。综合来看, 掺杂La2O3的样品兼具高居里温度(TC=397 ℃)和高压电系数(d33=290 pC/N), 并且在300 ℃退火4 h后d33仍能保持在270 pC/N左右, 有望在极限工作温度为300 ℃的高温压电器件中获得应用。

Abstract

Aiming at the urgent demand of the new generation of sonic logging tools for their core components, piezoelectricceramics, which have high Curie temperature, high voltage electrical coefficient and high stability, 0.06BiYbO3-0.94Pb(Zr0.48Ti0.52)O3(BY-PZT) ternary piezoceramics with addition of different oxide additives were prepared by traditional solid-state reaction method. The effects of oxide additives on the phase structures and electrical properties of the BY-PZT ternary piezoceramics were investigated. XRD and SEM analysis show that all samples are pure tetragonal perovskite structure. When doped with Cr2O3, the average grain size of the samples has a maximum value. Dielectric temperature spectrum and resonance spectrum analysis illustrated that doping of four kinds of oxide improved the temperature stability of dielectric properties respectively. The lanthanum-doped sample got the lowest temperature coefficient of dielectric constant (Tkε). The mechanical quality factor (Qm) has a maximum value when MnO2 are doped; but the samples doped with CeO2 have the best thermal depolarization resistance. The analysis of high temperature complex impedance (Cole-Cole) shows that Cr2O3 doping significantly improve the high temperature resistivity of the ceramic. It is found that the electrical conduction behavior of the ceramics at high temperature is dominated by the grain-boundary response. The lanthanum-doped sample has both high Curie temperature (TC=397 ℃) and high piezoelectric constant (d33=290 pC/N), and after annealed at 300 ℃ for 4 h, the d33 value of the sample still retains above 270 pC/N, which provides great promising for application in the high-temperature piezoelectric devices with an extreme operating temperature of 300 ℃.

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周治, 王艺颖, 周华将, 雷丽勤, 王金秀, 陈渝. 0.06BiYbO₃-0.94Pb(Zr_0.48Ti_0.52)O₃三元系压电陶瓷的氧化物掺杂改性研究[J]. 硅酸盐通报, 2022, 41(3): 1020. ZHOU Zhi, WANG Yiying, ZHOU Huajiang, LEI Liqin, WANG Jinxiu, CHEN Yu. Doping Effects of Oxides on 0.06BiYbO₃-0.94Pb(Zr_0.48Ti_0.52)O₃ Ternary Piezoceramics[J]. Bulletin of the Chinese Ceramic Society, 2022, 41(3): 1020.

0.06BiYbO₃-0.94Pb(Zr_0.48Ti_0.52)O₃三元系压电陶瓷的氧化物掺杂改性研究

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