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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F22%3APU145304" target="_blank" >RIV/00216305:26620/22:PU145304 - isvavai.cz</a>
Result on the web
<a href="https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18602" target="_blank" >https://ceramics.onlinelibrary.wiley.com/doi/10.1111/jace.18602</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/jace.18602" target="_blank" >10.1111/jace.18602</a>

Result language
angličtina
Original language name
Rapid pressureless sintering of barium titanate-based piezoceramics and their electromechanical harvesting performance
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20504 - Ceramics

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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