Piezoelectric Response of Porous Ceramic and Composite Materials Based on (Pb, Zr)TiO3

Abstract

This chapter will describe the study of porous materials based on ferroelectric ceramics of the Pb(Zr, Ti)O3 type. The ceramic compositions are chosen, as a rule, near the MPB to optimise the electromechanical properties, and many examples of the electromechanical constants of the appropriate Pb(Zr, Ti)O3-type ceramics are provided in Table 2.1. Porous materials, whether they are a composite or a ceramic (Figures 1.6 and 2.3a), or contains closed pores (air inclusions, voids) or open pores (air channels), exhibit electromechanical properties that depend on the volume fraction and microgeometry of pores [1–5]. As shown by Banno [1], Wersing et al. [2, 3], Khoroshun et al. [6], and other authors, the electromechanical properties of porous ferroelectric ceramics can be described on the basis of averaging procedures similar to those suitable for the piezo-active composites. Following this principle, we will consider piezoelectric performance and features of the porous ceramics and composites as two groups of related heterogeneous materials.KeywordsPorous MaterialPiezoelectric CoefficientPorous CeramicElectromechanical PropertyPiezoelectric ResponseThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.