Effects of pore shape and porosity on the properties of porous PZT 95/5 ceramics

• Published in: Journal of the European Ceramic Society Vol. 27; no. 4; pp. 2025 - 2029
• Main Authors: Zeng, Tao, Dong, XianLin, Mao, ChaoLiang, Zhou, ZhiYong, Yang, Hong
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 2007; Elsevier
• Subjects: Applied sciences; Building materials. Ceramics. Glasses; Ceramic industries; Chemical industry and chemicals; Dielectric properties; Electrotechnical and electronic ceramics; Exact sciences and technology; Ferroelectric properties; Porosity; PZT; Technical ceramics; PZT; Porosity; Ferroelectric properties; Dielectric properties; Scanning electron microscopy; Electrical properties; Pore structure; Lead titanates; Ferroelectric ceramics; Experimental study; X ray diffraction; Porous material; Oxide ceramics; Lead zirconates; Sintering; Manufacturing; Lead Titanates Zirconates; Electroceramics
• ISSN: 0955-2219; 1873-619X
• DOI: 10.1016/j.jeurceramsoc.2006.05.102

Porous lead zirconate titanate (PZT 95/5) ferroelectric ceramics were prepared by sintering compacts consisting of PZT and pore formers. The piezoelectric, dielectric and ferroelectric properties of porous PZT ceramics were investigated as a function of pore shape and porosity. Piezoelectric coefficient ( d 33), dielectric constant ( ɛ 33) and remnant polarization ( P r) decreased with an increase in porosity, and the porous PZT ceramics with spherical pores exhibited better properties than that with irregular pores. Furthermore, the electrical conductivities of PZT ceramics were investigated to explain the phenomena that porous PZT ceramics exhibited lower dielectric loss (tan δ) than dense PZT ceramics in the temperature range from 250 to 500 °C.