Premium
Influence of Porosity Orientation on Physical Properties in Porous PZT Ceramics
Author(s) -
Eichhorn Franziska,
Kakimoto Kenichi,
Greil Peter,
Fey Tobias
Publication year - 2019
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201900390
Subject(s) - materials science , porosity , lead zirconate titanate , composite material , sintering , ceramic , flexural strength , tape casting , dielectric , ferroelectricity , optoelectronics
Orientation of porosity in porous media influences the pore network and their physical properties. Sacrificial cellulose templates arranged in different stacked layer orientation configurations with various distortion form the oriented pore network. The templates are embedded into non‐aqueous lead zirconate titanate (PZT) slurry (solid fracture of 48 vol%) and burn‐out while sintering. The porous PZT ceramics have a mean porosity of up to 39% Microcomputer tomography (μCT) measurement and SEM analysis are used for pore network analysis. The longitudinal and transversal piezoelectric coefficients ( d 33 and d 31 ) and the relative permittivity ϵ r vary between 15 and 98% according to the reference sample. The bending strength σ b (double ring test) is reduced by 60% with increasing porosity compared to the dense sample.