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Open AccessArticle

Phase Evolution, Filler-Matrix Interactions, and Piezoelectric Properties in Lead Zirconate Titanate (PZT)-Filled Polymer-Derived Ceramics (PDCs)

1
Institute of Glass and Ceramics, Department of Materials Science and Engineering, University of Erlangen-Nürnberg, Martensstraße 5, 91058 Erlangen, Germany
2
Institute for Materials and Joining Technology—Nonmetallic Inorganic Materials and Composites, Otto-von-Guericke-University Magdeburg, Große Steinernetischstraße 6, 39104 Magdeburg, Germany
3
Frontier Research Institute for Materials Science, Nagoya Institute of Technology, Nagoya 466-8555, Japan
*
Author to whom correspondence should be addressed.
Materials 2020, 13(7), 1520; https://doi.org/10.3390/ma13071520
Received: 26 February 2020 / Revised: 22 March 2020 / Accepted: 23 March 2020 / Published: 26 March 2020
(This article belongs to the Special Issue Advances in Functional Cellular Structures and Composites)
PZT-silsesquioxane-based 0-3 hybrid materials are prepared by mixing lead zirconate titanate (Pb(Zr,Ti)O3; PZT) powder with a [R-SiO3/2]n (R = H, CH3, CH=CH2, C6H5) silsequioxane preceramic polymer. A PZT load up to 55 vol.% can be reached in the final composite. The piezoelectric and mechanical properties are investigated as a function of the filler content and are compared with theoretical models and reference samples made of the pure preceramic polymer or PZT filler. The piezoelectric response of the composites, as expressed by the relative permittivity and the piezoelectric coefficients d33 and g33, increases with an increasing PZT content. The bending strength of the composites ranges between 15 MPa and 31 MPa without a clear correlation to the filler content. The thermal conductivity increases significantly from 0.14 W∙m−1∙K−1 for the pure polymer-derived ceramic (PDC) matrix to 0.30 W∙m−1∙K−1 for a sample containing 55 vol.% PZT filler. From X-ray diffraction experiments (XRD), specific interactions between the filler and matrix are observed; the crystallization of the PDC matrix in the presence of the PZT filler is inhibited; conversely, the PDC matrix results in a pronounced decomposition of the filler compared to the pure PZT material. View Full-Text
Keywords: piezoelectric material; polymer-derived ceramic (PDC); lead zirconate titanate (PZT); composite material; filler matrix interaction piezoelectric material; polymer-derived ceramic (PDC); lead zirconate titanate (PZT); composite material; filler matrix interaction
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Eichhorn, F.; Kellermann, S.; Betke, U.; Fey, T. Phase Evolution, Filler-Matrix Interactions, and Piezoelectric Properties in Lead Zirconate Titanate (PZT)-Filled Polymer-Derived Ceramics (PDCs). Materials 2020, 13, 1520.

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