Detail publikačního výsledku

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.

Originální název

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

Anglický název

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

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

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

Klíčová slova v angličtině

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

Autoři

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

Rok RIV

2025

Vydáno

15.12.2024

Nakladatel

Elsevier

ISSN

1873-3956

Periodikum

Ceramics International

Svazek

50

Číslo

24

Stát

Spojené království Velké Británie a Severního Irska

Strany od

53491

Strany do

53501

Strany počet

11

URL

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

Plný text v Digitální knihovně

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="0272-8842",
  url="https://www.sciencedirect.com/science/article/pii/S0272884224047187"
}

Dokumenty

1-s2.0-S0272884224047187-main