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Effects of CuO addition on the sinterability and electric properties in PbNb(2)O(6)-based ceramics

PbNb(2)O(6) (PN)-based ceramics with tungsten bronze structure are promising piezoelectric materials in high-temperature devices such as piezoelectric vibration transducers. However, the PN-based ceramics usually exhibit a low bulk density, which greatly limits their practical applications. In this...

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Autores principales: Fang, Renrui, Zhou, Zhiyong, Liang, Ruihong, Dong, Xianlin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Published by Elsevier Ltd. 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7292948/
https://www.ncbi.nlm.nih.gov/pubmed/32834343
http://dx.doi.org/10.1016/j.ceramint.2020.06.120
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author Fang, Renrui
Zhou, Zhiyong
Liang, Ruihong
Dong, Xianlin
author_facet Fang, Renrui
Zhou, Zhiyong
Liang, Ruihong
Dong, Xianlin
author_sort Fang, Renrui
collection PubMed
description PbNb(2)O(6) (PN)-based ceramics with tungsten bronze structure are promising piezoelectric materials in high-temperature devices such as piezoelectric vibration transducers. However, the PN-based ceramics usually exhibit a low bulk density, which greatly limits their practical applications. In this work, CuO was used as the sintering aid to form a liquid-phase bridge, leading to an obvious increase of the bulk density of PN-based ceramics by 11% (from 5.25 to 5.85 g cm(−3)) and the improvement of the piezoelectric constant (d(33)) (from 168 to 190 pC/N) and the Curie temperature (T(C)) from 367 to 395 °C. The positive influence of CuO on densification has been proved by SEM and fracture toughness. The XRD patterns confirmed that there was no secondary phase introduced by CuO addition. The Raman spectra revealed that part of Cu(2+) ions has probably diffused into host lattice of the PN and preferred to occupy on A-sites. These results not only demonstrate the high potential of the CuO added PN-based ceramics for high-temperature piezoelectric applications, but also reveal the corresponding structure-properties relationship as well as provide a way to improve the sinterability, d(33), and T(C) simultaneously.
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spelling pubmed-72929482020-06-14 Effects of CuO addition on the sinterability and electric properties in PbNb(2)O(6)-based ceramics Fang, Renrui Zhou, Zhiyong Liang, Ruihong Dong, Xianlin Ceram Int Article PbNb(2)O(6) (PN)-based ceramics with tungsten bronze structure are promising piezoelectric materials in high-temperature devices such as piezoelectric vibration transducers. However, the PN-based ceramics usually exhibit a low bulk density, which greatly limits their practical applications. In this work, CuO was used as the sintering aid to form a liquid-phase bridge, leading to an obvious increase of the bulk density of PN-based ceramics by 11% (from 5.25 to 5.85 g cm(−3)) and the improvement of the piezoelectric constant (d(33)) (from 168 to 190 pC/N) and the Curie temperature (T(C)) from 367 to 395 °C. The positive influence of CuO on densification has been proved by SEM and fracture toughness. The XRD patterns confirmed that there was no secondary phase introduced by CuO addition. The Raman spectra revealed that part of Cu(2+) ions has probably diffused into host lattice of the PN and preferred to occupy on A-sites. These results not only demonstrate the high potential of the CuO added PN-based ceramics for high-temperature piezoelectric applications, but also reveal the corresponding structure-properties relationship as well as provide a way to improve the sinterability, d(33), and T(C) simultaneously. Published by Elsevier Ltd. 2020-10-15 2020-06-13 /pmc/articles/PMC7292948/ /pubmed/32834343 http://dx.doi.org/10.1016/j.ceramint.2020.06.120 Text en © 2020 Published by Elsevier Ltd. Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.
spellingShingle Article
Fang, Renrui
Zhou, Zhiyong
Liang, Ruihong
Dong, Xianlin
Effects of CuO addition on the sinterability and electric properties in PbNb(2)O(6)-based ceramics
title Effects of CuO addition on the sinterability and electric properties in PbNb(2)O(6)-based ceramics
title_full Effects of CuO addition on the sinterability and electric properties in PbNb(2)O(6)-based ceramics
title_fullStr Effects of CuO addition on the sinterability and electric properties in PbNb(2)O(6)-based ceramics
title_full_unstemmed Effects of CuO addition on the sinterability and electric properties in PbNb(2)O(6)-based ceramics
title_short Effects of CuO addition on the sinterability and electric properties in PbNb(2)O(6)-based ceramics
title_sort effects of cuo addition on the sinterability and electric properties in pbnb(2)o(6)-based ceramics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7292948/
https://www.ncbi.nlm.nih.gov/pubmed/32834343
http://dx.doi.org/10.1016/j.ceramint.2020.06.120
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