低温烧结PCW-PNN-PZT陶瓷的压电性能

IF 1.3 4区物理与天体物理 Q4 PHYSICS, CONDENSED MATTER

Ferroelectrics Letters Section Pub Date : 2017-05-04 DOI:10.1080/07315171.2017.1319748

Yong-Jin Kim, J. Yoo, Jie-Young Lee

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引用次数: 4

摘要

为了开发用于超声传感器的复合陶瓷，在x的变化条件下制备了Pb0.985Bi0.01(Co1/2W1/2)0.03(Ni1/3Nb2/3)0.09(ZrxTi1-x)0.88O3+0.25wt% CuO(简称PCW-PNN-PZT)体系陶瓷，并对其相微观结构、压电和介电特性进行了研究。当x = 0.495时，相变相边界(MPB)附近出现了成分。此外，在920℃的低温下，加入助烧剂CuO可烧结PCW-PNN-PZT陶瓷。在烧结温度为920℃，x = 0.495时，试样的密度(ρ)、机电耦合系数(kp)、介电常数(ϵr)、机械质量(Qm)和压电常数(d33)的最佳值为7.94 g/cm3。分别为0.65、1959、356、486 pC/N和15.56 [pm2/N]，适用于超声波传感器的应用。结果表明，由于PbO和CuO液相的作用，CuO能够降低压电陶瓷的烧结温度。

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Piezoelectric properties of PCW-PNN-PZT ceramics sintered at low temperature

ABSTRACT In this study, in order to develop the composition ceramics for ultrasonic sensor application, Pb0.985Bi0.01(Co1/2W1/2)0.03(Ni1/3Nb2/3)0.09(ZrxTi1-x)0.88O3+0.25wt% CuO (abbreviated as PCW-PNN-PZT) system ceramics were prepared with the variations of x and then their phase microstructure, piezoelectric and dielectric characteristics were investigated with the variations of x. The compositions near the morphotropic phase boundary (MPB) appeared when x = 0.495. Moreover, the PCW-PNN-PZT ceramics could be sintered at low temperature of 920°C by adding sintering aids CuO. At sintering temperature of 920°C and x = 0.495 specimen, the density (ρ), electromechanical coupling factor(kp), dielectric constant (ϵr), mechanical quality (Qm) and piezoelectric constant (d33) piezoelectric figure of merit (d33·g33) indicated the optimal value of 7.94 g/cm3. 0.65, 1959, 356, 486 pC/N, and 15.56 [pm2/N], respectively, suitable for ultrasonic sensor application. The CuO was proved to lower the sintering temperature of piezoelectric ceramics due to the effects of PbO and CuO liquid phase.

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来源期刊

Ferroelectrics Letters Section 物理-物理：凝聚态物理

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

4.8 months

期刊介绍： Ferroelectrics Letters is a separately published section of the international journal Ferroelectrics. Both sections publish theoretical, experimental and applied papers on ferroelectrics and related materials, including ferroelastics, ferroelectric ferromagnetics, electrooptics, piezoelectrics, pyroelectrics, nonlinear dielectrics, polymers and liquid crystals. Ferroelectrics Letters permits the rapid publication of important, quality, short original papers on the theory, synthesis, properties and applications of ferroelectrics and related materials.