Liquid-phase sintering of Pb(Zr,Ti)O3 using PbO-WO3 additive

被引：72

作者：

Nielsen, ER

Ringgaard, E

Kosec, M

机构：

[1] Ferroperm Piezoceram AS, DK-3490 Kvistgaard, Denmark

[2] Jozef Stefan Inst, SI-1000 Ljubljana, Slovenia

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2002年 / 22卷 / 11期

关键词：

electron microscopy; piezoelectric properties; PZT; sintering; wetting;

D O I：

10.1016/S0955-2219(01)00499-X

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The objective of this work was to lower the sintering temperature of lead zirconate titanate (PZT) without reducing the piezoelectric performance. PZT was sintered using PbO-WO3 additive of eutectic composition, which assists the densification process by liquid-phase formation. Sintering was carried out from 1075 to 1125 degreesC between I and 4 h. Density, dielectric properties and piezoelectric properties were measured. Microstructure and fracture mechanism have been studied by SEM. At the mildest sintering conditions, the additive has a positive effect on dielectric and piezoelectric properties. The liquid-phase sintering leads to a denser material without additional grain growth. PZT with PbO-WO3 additive is mechanically weaker than pure PZT. The liquid phase leads to weaker grain boundaries and the material cracks in intergranular fracture, whereas pure PZT has a mixture of intergranular and transgranular fracture, and PZT sintered conventionally at 1260 degreesC has transgranular fracture. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1847 / 1855

页数：9

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