2026-07-29T08:19:52Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/119552026-07-25T00:05:24Zcom_10259_9476com_10259.4_106com_10259_2604col_10259_9477
Iacomini, Antonio .
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Garroni, Sebastiano
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0000-0001-7686-6589
Mureddu, Marzia
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Malfatti, Luca
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Thakkar, Swapneel
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Orrù, Roberto
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Barbarossa, Simone
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Pakhomova, Ekaterina
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Cao, Giacomo
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Tamayo Ramos, Juan Antonio
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Parra de la Parra, Sandra de la
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Rumbo Lorenzo, Carlos
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0000-0002-5038-0334
García, Álvaro
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Bartolomé, José F.
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Pardo, Lorena .
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2026-07-24T08:03:42Z
2026-07-24T08:03:42Z
2022-09
0022-4596
https://hdl.handle.net/10259/11955
10.1016/j.jssc.2022.123589
In this work, “lead free” 0.99K0.5Na0.5NbO3-0.01BiFeO3 (KNN–BF) piezoceramics were prepared by a combination of mechanochemical activation, Spark Plasma Sintering and post-annealing treatment. Results show that the annealing treatment causes important microstructural and electrical changes. The SPS sample was characterized by low electrical resistance, while the air annealed samples showed better insulating properties due to a partial compensation of the oxygen vacancy. The best piezoelectric properties were found for the samples annealed at 1000 and 1050 °C for 2h due to the optimum grain size and oxygen vacancy compensation achieved. A further enhancement of the dielectric and piezoelectric properties was achieved through a second annealing treatment in oxygen flux at 1050 °C for 30 min. Moreover, the toxicity of the pellets was evaluated through exposure experiments to the pulverized KNN–BF pellets, employing two widely used human and environmental cellular models.
application/pdf
eng
Elsevier
Journal of Solid State Chemistry. 2022, V. 316, 123589
https://doi.org/10.1016/j.jssc.2022.123589
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
Potassium sodium niobate
High energy ball milling
Spark plasma sintering
Raman spectroscopy
Dielectric
Cytotoxic assessment
Cerámica industrial-Tratamiento térmico
Ceramics-Heat treatment
Processing, microstructure, electrical properties and cytotoxic behaviour of lead-free 0.99K0.5Na0.5NbO3-0.01BiFeO3 piezoceramics prepared using Spark Plasma Sintering (SPS)
info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
Journal of Solid State Chemistry
316
THUMBNAIL
Iacomini-jssc_2022.pdf.jpg
Iacomini-jssc_2022.pdf.jpg
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Iacomini-jssc_2022.pdf
Iacomini-jssc_2022.pdf
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10259/11955
oai:riubu.ubu.es:10259/11955
2026-07-25 02:05:24.361
Repositorio Institucional de la Universidad de Burgos
bubrep@ubu.es
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