Effect of Cylindrical Shock Synthesis on Properties and Sintering Behavior of PZT 95/5 Powder

doi:10.3724/SP.J.1077.2007.00827

Abstract

Abstract: Pb(Zr_0.95Ti_0.05)O₃ (PZT 95/5) powder was synthesized from the mixture of Pb₃O₄, ZrO₂, TiO₂ and Nb2O5 with cylindrical shock-loading device. By means of XRD, SEM, DSC-TG etc, the effects of shock wave on properties and sintering behavior of PZT 95/5 powder was studied. Also, the sintering activation energy of PZT 95/5 ceramic was obtained according to the sintering equation of diffusion mechanism deduced by sphere model. The results show that, the single-phase perovskite PZT 95/5 powder can be successfully prepared with the effects of high temperature and high pressure of shock wave. Because of the activation and fragmentation caused by shock wave, the grain refinement and lattice distortion are observed in PZT 95/5 powder, which can ameliorate the sinterability of PZT 95/5 ceramic. After pressureless sintered at 1200℃ for 3h, PZT 95/5 ceramic with density of 7.79 g·cm^-3 can be obtained. And the sintering activation energy of PZT 95/5 ceramic prepared by shock synthesis is 115.12 kJ·mol^-1, while that prepared by solid-state reaction is 242.57kJ·mol^-1. The sintering is activated evidently.

Key words: PZT 95/ 5, shock synthesis, activation modification, sintering

CLC Number:

TM282
O521

CHEN-Feng,YANG Shi-Yuan,WANG Jun-Xia,HE Hong-Liang,WANG Guan-Cai. Effect of Cylindrical Shock Synthesis on Properties and Sintering Behavior of PZT 95/5 Powder[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2007.00827.

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Effect of Cylindrical Shock Synthesis on Properties and Sintering Behavior of PZT 95/5 Powder

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