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Lead Free Multilayer Piezoelectric Actuators by Economically New Approach

Hussain, Fayaz; Khesro, Amir; Lu, Zhilun; Wang, Ge; Wang, Dawei

Authors

Fayaz Hussain

Amir Khesro

Zhilun Lu

Ge Wang

Dawei Wang



Abstract

The replacement of lead zirconate titanate ceramics (PZTs), with a lead-oxide (PbO)-free alternative is the subject of intense investigation worldwide. In this research, a cheap reliable methodology for the fabrication of multilayers (MLs) of lead-free potassium sodium niobate (KNN)-based ceramics is presented without the need for vacuuming and/or hot isostatic pressing of the tape. The thickness per active layer was 193 μm and 102 μm for the 10 and 16 layer MLs actuators, respectively. Effective d33 (piezoelectric coefficient), effective d33∗ (electrostrain coefficient), bi-polar strain (Smax), max displacement, dielectric constant (ϵr) and loss (tanδ) are 2500 pC/N, 4604 pm/V, 0.17%, 2.2 μm, 1812 and 2% at 1 kHz, respectively, where the effective d33 or d33∗ is the total output of all layers together. The ultimate target materials for potential substitution with KNN-based ceramics and MLs are commercial PZT-4 and PZT-8.

Citation

Hussain, F., Khesro, A., Lu, Z., Wang, G., & Wang, D. (2020). Lead Free Multilayer Piezoelectric Actuators by Economically New Approach. Frontiers in Materials, 7, Article 87. https://doi.org/10.3389/fmats.2020.00087

Journal Article Type Article
Acceptance Date Mar 25, 2020
Online Publication Date Apr 22, 2020
Publication Date Apr 22, 2020
Deposit Date Oct 23, 2021
Publicly Available Date Oct 25, 2021
Journal Frontiers in Materials
Electronic ISSN 2296-8016
Publisher Frontiers Media
Peer Reviewed Peer Reviewed
Volume 7
Article Number 87
DOI https://doi.org/10.3389/fmats.2020.00087
Keywords lead free, multilayer, piezoelectric, actuators, KNN
Public URL http://researchrepository.napier.ac.uk/Output/2815965

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Publisher Licence URL
http://creativecommons.org/licenses/by/4.0/

Copyright Statement
This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.





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