High-frequency acoustic characterization of porous lead zirconate titanate for backing applications
| Autor: | Franck Levassort, Julien Bustillo, Marc Lethiecq, Tina Bakaric, Danjela Kuscer, Andre-Pierre Abellard |
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| Přispěvatelé: | Jozef Stefan Institute [Ljubljana] (IJS), Centre des Matériaux (MAT), MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), GREMAN (matériaux, microélectronique, acoustique et nanotechnologies) (GREMAN - UMR 7347), Institut National des Sciences Appliquées - Centre Val de Loire (INSA CVL), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours (UT)-Centre National de la Recherche Scientifique (CNRS), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Tours-Centre National de la Recherche Scientifique (CNRS), UMR7633, Bibliothèque |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
02 engineering and technology Lead zirconate titanate 01 natural sciences chemistry.chemical_compound backing 0103 physical sciences Ceramic Composite material Porosity 010301 acoustics porous PZT Attenuation acoustic characterization 021001 nanoscience & nanotechnology Piezoelectricity [PHYS.COND.CM-MS] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] high-frequency Transducer chemistry visual_art Volume fraction [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] visual_art.visual_art_medium 0210 nano-technology Acoustic attenuation |
| Zdroj: | 2017 IEEE International Ultrasonics Symposium (IUS) 2017 IEEE International Ultrasonics Symposium (IUS), Sep 2017, Washington, United States |
| Popis: | International audience; An original method to measure the acoustic properties of porous Pb(Zr0.53Ti0.47)O3 (PZT) backings at high-frequencies (HF, i.e. between 15 and 25 MHz), was developed. To this end, a piezoelectric PZT-based thick film was deposited onto the porous ceramic backing and directly used to generate an acoustic signal in water. Here, the considered signal is the one that was generated in water, reflected on a target, back toward the multilayer structure, transmitted through the piezoelectric thick film and then to the rear face of the porous backing and finally back to the active film. This method avoids the overlap of the electrical excitation and the measured signal. In this study, two types of porous PZT backings with 1.5 and 10 micrometers pore sizes (volume fraction around 20%) were characterized. For both samples, group velocities were around 3500 m/s and for the 10 micrometers pores size sample, the measured acoustic attenuation coefficient was 1.7 dB/mm/MHz in the frequency range of the transducer bandwidth. Finally, this method is found to be an easy way to determine, in operating conditions, the minimum required thickness of the porous PZT to be used as a backing (in order to be considered as a semi-infinite medium) for HF transducer applications. |
| Databáze: | OpenAIRE |
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