RT info:eu-repo/semantics/article
T1 Processing, microstructure, electrical properties and cytotoxic behaviour of lead-free 0.99K0.5Na0.5NbO3-0.01BiFeO3 piezoceramics prepared using Spark Plasma Sintering (SPS)
A1 Iacomini, Antonio .
A1 Garroni, Sebastiano
A1 Mureddu, Marzia
A1 Malfatti, Luca
A1 Thakkar, Swapneel
A1 Orrù, Roberto
A1 Barbarossa, Simone
A1 Pakhomova, Ekaterina
A1 Cao, Giacomo
A1 Tamayo Ramos, Juan Antonio
A1 Parra de la Parra, Sandra de la
A1 Rumbo Lorenzo, Carlos
A1 García, Álvaro
A1 Bartolomé, José F.
A1 Pardo, Lorena .
K1 Potassium sodium niobate
K1 High energy ball milling
K1 Spark plasma sintering
K1 Raman spectroscopy
K1 Dielectric
K1 Cytotoxic assessment
K1 Cerámica industrial-Tratamiento térmico
K1 Ceramics-Heat treatment
AB 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.
PB Elsevier
SN 0022-4596
YR 2022
FD 2022-09
LK https://hdl.handle.net/10259/11955
UL https://hdl.handle.net/10259/11955
LA eng
DS Repositorio Institucional de la Universidad de Burgos
RD 31-jul-2026