Publication detail

Rapid pressureless sintering of barium titanate-based piezoceramics and their electromechanical harvesting performance

BIJALWAN, V. PRAJZLER, V. ERHART, J. VELAZQUEZ, J. GALUSEK, D. MACA, K.

Original Title

Rapid pressureless sintering of barium titanate-based piezoceramics and their electromechanical harvesting performance

Type

journal article in Web of Science

Language

English

Original Abstract

The innovative method of processing of Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCZT), Ba0.95Ca0.05Ti0.91Sn0.09O3 (BCST), and BCZT doped with 0.07-wt.% CeO2 (Ce-BCZT) lead-free piezoceramics is presented. The rapid pressureless sintering (RPLS) technique can reduce high-temperature processing time more than eight times compared to the conventional sintering. RPLS was performed at a heating and cooling rate of 100 degrees C/min up to 1550 degrees C with 15-, 30-, 45-, and 60-min dwell times, producing defect and crack-free nearly dense ceramics. The optimal microstructure exhibiting the highest piezoelectric constant was reached after 30 min in BCZT (grain size 25-30 mu m, d(33) = 428 pC/N), 45 min in Ce-BCZT (grain size 30-35 mu m, d(33) = 515 pC/N), and 45 min of dwell time in BCST (grain size 58-68 mu m, d(33) = 443 pC/N). The highly competitive energy-harvesting properties were discovered for BCZT, resp. Ce-BCZT (n = 94.5, resp. 93.4%, FOMoff = 6.1, resp. 7.8 x 10(-10) m(2)/N) ceramics.

Keywords

energy harvesting; lead-free ceramics; microstructure; piezoelectric materials; properties; rapid pressureless sintering

Authors

BIJALWAN, V.; PRAJZLER, V.; ERHART, J.; VELAZQUEZ, J.; GALUSEK, D.; MACA, K.

Released

1. 11. 2022

Publisher

WILEY

Location

HOBOKEN

ISBN

1551-2916

Periodical

JOURNAL OF THE AMERICAN CERAMIC SOCIETY

Year of study

105

Number

11

State

United States of America

Pages from

6886

Pages to

6897

Pages count

12

URL

https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18602

BibTex

@article{BUT178860,
  author="Vijay {Bijalwan} and Vladimír {Prajzler} and Jiří {Erhart} and Jose J. {Velazquez} and Dušan {Galusek} and Karel {Maca}",
  title="Rapid pressureless sintering of barium titanate-based piezoceramics and their electromechanical harvesting performance",
  journal="JOURNAL OF THE AMERICAN CERAMIC SOCIETY",
  year="2022",
  volume="105",
  number="11",
  pages="6886--6897",
  doi="10.1111/jace.18602",
  issn="1551-2916",
  url="https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18602"
}