Application of gelcasting to the fabrication of piezoelectric ceramic parts

被引：39

作者：

Guo, D ^{[1
]}

Cai, K ^{[1
]}

Li, LT ^{[1
]}

Gui, ZL ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Mat Sci & Engn, Beijing 100084, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 07期

关键词：

electrical properties; gelcasting; PZT; piezoelectric properties; rheology;

D O I：

10.1016/S0955-2219(02)00279-0

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Gelcasting is a novel method for the molding of ceramic powder based on a synthesis of concepts derived from traditional ceramics and polymer chemistry. Although a wealth of literature has been published describing the application of the technology to the fabrication of structural ceramics, little has been reported about its application to the fabrication of functional ceramics. In order to extend the technology to the fabrication of piezoelectric ceramics in this article the colloidal chemistry of PZT powders in aqueous solution, the rheological behavior of the PZT suspension and the influence of dispersants on the rheology of the suspension and on the electrical properties of the gelcast PZT samples are investigated. Because the electrical properties of PZT are very sensitive to the chemical composition of the sample, unsuitable selected dispersants can result in the deterioration of the electric properties of the material although concentrated PZT slurry with low viscosity can be obtained by different dispersants. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1131 / 1137

页数：7

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