Effects of Different Sintering Temperature on the Microstructure and Piezoelectric Properties of Pb(Nb_2/3Zn_1/3)_x(Zr₅₂Ti₄₈)_1-XO₃ Ceramics

Abstract:

In this paper, the effects of different sintering temperature on the microstructure and piezoelectric properties of Pb(Nb2/3Zn1/3)0.03(Zr52Ti48)0.97O3(PNZZT) ceramic samples were investigated. The Pb(Nb2/3Zn1/3)0.03(Zr52Ti48)0.97O3 ceramics materials was prepared by a conventional mixed oxide method. In the period of the experiment, the relationship between crystallographic phase and microstructure were analyzed by X-ray diffraction(XRD) and scanning electron microscopy(SEM) respectively. The XRD patterns shows that all of the ceramic samples are with a tetragonal perovskite structure. Along with sintering temperature increased and the x is 0.03, the grain size gradually become big. Through this experiment, it has been found that when the x is 0.03 and sintered at 1130°C for 2 h, the grains grow well, the grain-boundary intersection of the sample combined well and the porosity of the ceramics decreased, an excellent comprehensive electrical properties of the Pb(Nb2/3Zn1/3)0.03(Zr52Ti48)0.97O3 samples can be obtained. Its best electrical properties are as follows: dielectric constant (ε) is 1105, dielectric loss(tg) is 0.017, electromechanical coupling coefficient (Kp) is 0.287, piezoelectric constant(d33) is 150PC/N

• Periodical: Advanced Materials Research (Volumes 1061-1062)
• Pages: 83-86
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1061-1062.83
• Online since: December 2014
• Authors: Hong Wu, De Yi Zheng
• Keywords: Microstructure, Piezoelectric Properties, PNZZT, Sintering Temperature

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