Identificador persistente para citar o vincular este elemento: http://hdl.handle.net/10553/133381
Título: Fine-grained BCZT piezoelectric ceramics by combining high-energy mechanochemical synthesis and hot-press sintering
Autores/as: Sayagués, M. J.
Otero, A.
Santiago-Andrades, L.
Poyato, R.
Monzón Verona, Mario Domingo 
Paz Hernández, Rubén 
Gotor, F. J.
Moriche, R.
Clasificación UNESCO: 3313 Tecnología e ingeniería mecánicas
Palabras clave: Bczt
Dielectric Properties
Lead-Free Piezoceramics
Mechanosynthesis
Piezoelectric Properties, et al.
Fecha de publicación: 2024
Proyectos: Nuevos Scaffolds Piezoeléctricos de Compuestos Nanoestructurados Para la Regeneración Ósea Mediante Fabricación Aditiva 
Publicación seriada: Journal of Alloys and Compounds 
Resumen: Different stoichiometries of lead-free BaZr0.2Ti0.8O3–Ba0.7Ca0.3TiO3 (BCZT) prepared by mechanosynthesis and sintered by either conventional sintering (CS) or hot pressing (HP) techniques were studied to establish the dependence of piezoelectric and dielectric properties on sintering parameters and microstructure. All synthesized stoichiometries showed a pseudocubic perovskite phase with homogeneously distributed A- and B-cations in the structure. The BCZT retained the pseudocubic symmetry after sintering and an average grain size <1.8 µm was obtained in all cases. HP sintering hindered the secondary phase segregation observed in the CS ceramics and increased the relative density. Piezoelectric coefficients (d33) ranging from 5.1 to 21 pC/N and from 10.0 to 88.0 pC/N were obtained for CS and HP ceramics, respectively, despite the pseudocubic symmetry and the fine grain size. The higher d33 values for the HP ceramics are a consequence of the higher density, better chemical homogeneity and lower sintering temperature and time required for the mechanosynthesized BCZT powders with high sintering activity.
URI: http://hdl.handle.net/10553/133381
ISSN: 0925-8388
DOI: 10.1016/j.jallcom.2024.176453
Fuente: Journal of Alloys and Compounds [ISSN 0925-8388], v. 1007, (Diciembre 2024)
Colección:Artículos
Adobe PDF (13,06 MB)
Vista completa

Google ScholarTM

Verifica

Altmetric


Comparte



Exporta metadatos



Los elementos en ULPGC accedaCRIS están protegidos por derechos de autor con todos los derechos reservados, a menos que se indique lo contrario.