Publication detail

Effect of alumina or zirconia particles on the performance of lead-free BCZT piezoceramics

MAŘÁK, V. DRDLÍK, D. BIJALWAN, V. TOFEL, P. ERHART, J. CHLUP, Z. MACA, K.

Original Title

Effect of alumina or zirconia particles on the performance of lead-free BCZT piezoceramics

Type

journal article in Web of Science

Language

English

Original Abstract

The barium titanate derivative Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT) offers high dielectric and piezoelectric performance but has poor mechanical properties. Ceramic composite materials combining BCZT with tougher Al2O3 or ZrO2 could be the solution to the inherent brittleness of electroceramics. This work focuses on BCZT with 1–5 vol% addition of reinforcing phase dispersed in the microstructure. While hardness was improved in all composites, especially in ZrO2-reinforced BCZT, toughness was positively affected only by Al2O3. The chemical reactivity of BCZT during sintering resulted in the formation of new barium aluminate phases at the grain boundaries and possibly also within the grains, which affected the electrical properties of the composites. The addition of zirconia resulted in the formation of BaZrO3 or Ba(Zr,Ti)O3, which is a natural part of the BCZT solid solution and shifts the phase composition towards relaxor behaviour. ZrO2-reinforced composites exhibited higher permittivity but lower ferroelectric properties, accompanied by a substantial Curie temperature decrease.

Keywords

Lead-free piezoceramics; Particle composite; Barium calcium zirconium titanate; Alumina; Zirconia

Authors

MAŘÁK, V.; DRDLÍK, D.; BIJALWAN, V.; TOFEL, P.; ERHART, J.; CHLUP, Z.; MACA, K.

Released

15. 12. 2024

Publisher

Elsevier

ISBN

1873-3956

Periodical

CERAMICS INTERNATIONAL

Year of study

50

Number

24

State

United Kingdom of Great Britain and Northern Ireland

Pages from

53491

Pages to

53501

Pages count

11

URL

https://www.sciencedirect.com/science/article/pii/S0272884224047187

Full text in the Digital Library

http://hdl.handle.net/11012/250063

BibTex

@article{BUT189904,
  author="Vojtěch {Mařák} and Daniel {Drdlík} and Vijay {Bijalwan} and Pavel {Tofel} and Jiří {Erhart} and Zdeněk {Chlup} and Karel {Maca}",
  title="Effect of alumina or zirconia particles on the performance of lead-free BCZT piezoceramics",
  journal="CERAMICS INTERNATIONAL",
  year="2024",
  volume="50",
  number="24",
  pages="53491--53501",
  doi="10.1016/j.ceramint.2024.10.199",
  issn="1873-3956",
  url="https://www.sciencedirect.com/science/article/pii/S0272884224047187"
}