Fabrication and evaluation of porous piezoelectric ceramics and porosity-graded piezoelectric actuators

被引：129

作者：

Li, JF ^{[1
]}

Takagi, K

Ono, M

Pan, W

Watanabe, R

Almajid, A

Taya, M

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] Tohoku Univ, Dept Mat Proc, Sendai, Miyagi 980, Japan

[3] Univ Washington, Dept Mech Engn, Ctr Intelligent Mat & Syst, Seattle, WA 98195 USA

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2003年 / 86卷 / 07期

关键词：

D O I：

10.1111/j.1151-2916.2003.tb03430.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：

Porous ceramics of lead zirconate titanate (PZT) were prepared by sintering powder compacts consisting of PZT and stearic acid powders in an air atmosphere; stearic acid was added as a pore-forming agent (PFA). The dielectric, elastic and piezoelectric properties of uniformly porous PZT ceramics were investigated as a function of the porosity volume fraction. Furthermore, a beam-shaped PZT actuator sample with a graded porosity content across its thickness was fabricated by sintering PFA-graded powder compacts. The electric-field-induced bending displacement characteristics of the actuator samples were measured by using strain gauges and were found to be in good agreement with the theoretical predication based on a classical lamination theory.

引用

页码：1094 / 1098

页数：5

共 16 条

[1] Analysis of out-of-plane displacement and stress field in a piezocomposite plate with functionally graded microstructure [J].