Publication detail

Rapid pressure-less and spark plasma sintering of (Ba0.85Ca0.15Zr0.1T0.9)O3 lead-free piezoelectric ceramics

BIJALWAN, V. PRAJZLER, V. ERHART, J. TAN, H. ROUPCOVÁ, P. SOBOLA, D. TOFEL, P. MACA, K.

Original Title

Rapid pressure-less and spark plasma sintering of (Ba0.85Ca0.15Zr0.1T0.9)O3 lead-free piezoelectric ceramics

Type

journal article in Web of Science

Language

English

Original Abstract

This work shows for the first time the possibility to sinter BCZT powder compacts by rapid heating rates within one hour of sintering, while achieving good piezoelectric properties. The sintering was performed by rapid (heating rates 100 and 200 °C/min) pressure-less sintering (PLS) at 1550 °C/5-60 min and by SPS sintering (100 °C/min, 1450 °C/5−60 min and 1500 °C/15−45 min). The rapid PLS samples reached a relative density up to 94 % and grain sizes of 17–36 μm acquiring d33 up to 414 pC/N. Although the SPS samples reached full density at 1450 °C, their piezoelectric properties worsened due to smaller grains (10−15 μm) as well as formation of cracks at dwell times > 30 min. At elevated SPS temperature of 1500 °C/30 min, the d33 increased to 360 pC/N sustaining full density. Even higher increase in d33 (424 pC/N) of SPS samples was achieved by post-rapid PLS at 1550 °C/60 min resulting from further expansion in grain size.

Keywords

Lead-free piezoceramics; Microstructure; Piezoelectric constant; Rapid pressure-less sintering; SPS

Authors

BIJALWAN, V.; PRAJZLER, V.; ERHART, J.; TAN, H.; ROUPCOVÁ, P.; SOBOLA, D.; TOFEL, P.; MACA, K.

Released

1. 4. 2021

ISBN

0955-2219

Periodical

Journal of the European Ceramic Society

Year of study

41

Number

4

State

United Kingdom of Great Britain and Northern Ireland

Pages from

2514

Pages to

2523

Pages count

10

URL

https://www.sciencedirect.com/science/article/pii/S0955221920309286?via%3Dihub

BibTex

@article{BUT169317,
  author="Vijay {Bijalwan} and Vladimír {Prajzler} and Jiří {Erhart} and Hua {Tan} and Pavla {Roupcová} and Dinara {Sobola} and Pavel {Tofel} and Karel {Maca}",
  title="Rapid pressure-less and spark plasma sintering of (Ba0.85Ca0.15Zr0.1T0.9)O3 lead-free piezoelectric ceramics",
  journal="Journal of the European Ceramic Society",
  year="2021",
  volume="41",
  number="4",
  pages="2514--2523",
  doi="10.1016/j.jeurceramsoc.2020.11.029",
  issn="0955-2219",
  url="https://www.sciencedirect.com/science/article/pii/S0955221920309286?via%3Dihub"
}