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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.121  No.1416 (August) (2013)  >  pp.698-701

Journal of the Ceramic Society of Japan
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Preparation of barium titanate porous ceramics and their sensor properties

Kazuki MAEDA1), Ichiro FUJII1), Kouichi NAKASHIMA1), Gakuyo FUJIMOTO2), Kazuhiro SUMA2), Toru SUKIGARA2), Satoshi WADA1)
1) Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi 2) Honda R&D Co., Ltd. Automobile R&D Center

Porous barium titanate (BaTiO3, BT) ceramics were prepared by a conventional sintering method using two kinds of BT particles. The relationship between pore structure (porosity and pore size) of BT ceramics and their sensor properties was investigated. Since a piezoelectric constant d33 of BT depends largely on the pore structures, the microstructure control of porous BT ceramics is important to improve the figure-of-merit of piezoelectric stress sensor application (g33/ρ). In this study, the maximal piezoelectric g33 constant value of 14.8 × 10−3 V·m·N−1 and the maximal g33/ρ value of 3.14 × 103 V·m4·N−1·g−1 were obtained at a porosity of approximately 23%.

Barium titanate, Porous ceramics, Sensor application, Figure of merit, Nanopore

Received: April 22, 2013
Accepted: July 03, 2013 , Published online: August 01, 2013
Copyright © 2013 The Ceramic Society of Japan



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