Artículo
Electrical Performance of Orthotropic and Isotropic 3YTZP Composites with Graphene Fillers
Autor/es | López Pernía, Cristina
Muñoz Ferreiro, Carmen Moriche Tirado, Rocío Morales Rodríguez, Ana Gallardo López, Ángela María Poyato Galán, Rosalía |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2022 |
Fecha de depósito | 2023-04-17 |
Publicado en |
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Premios | Premio Mensual Publicación Científica Destacada de la US. Facultad de Física |
Resumen | 3 mol% yttria tetragonal zirconia polycrystal (3YTZP) composites with orthotropic or isotropic microstructures were obtained incorporating few layer graphene (FLG) or exfoliated graphene nanoplatelets (e-GNP) as fillers. ... 3 mol% yttria tetragonal zirconia polycrystal (3YTZP) composites with orthotropic or isotropic microstructures were obtained incorporating few layer graphene (FLG) or exfoliated graphene nanoplatelets (e-GNP) as fillers. Electrical conductivity was studied in a wide range of contents in two configurations: perpendicular (σꓕ) and parallel (σ//) to the pressing axis during spark plasma sintering (SPS). Isotropic e-GNP composites presented excellent electrical conductivity for high e-GNP contents (σꓕ ∼ 3200 S/m and σ// ∼ 1900 S/m for 20 vol% e-GNP), consequence of their misoriented distribution throughout the matrix. Optimum electrical performance was achieved in the highly anisotropic FLG composites, with high electrical conductivity for low contents (σꓕ ∼ 680 S/m for 5 vol%), percolation threshold below 2.5 vol% FLG and outstanding electrical conductivity for high contents (σꓕ ∼ 4000 S/m for 20 vol%), result of the high aspect ratio and low thickness of FLG. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España European Commission (EC). Fondo Europeo de Desarrollo Regional (FEDER) Ministerio de Economía y Competitividad (MINECO). España Universidad de Sevilla |
Identificador del proyecto | GC2018–101377-B-100
MCIN/AEI/ 10.13039/501100011033 P20_01024 BES-2016- 078711 USE-18740-H |
Cita | López Pernía, C., Muñoz Ferreiro, C., Moriche Tirado, R., Morales Rodríguez, A., Gallardo López, Á.M. y Poyato Galán, R. (2022). Electrical Performance of Orthotropic and Isotropic 3YTZP Composites with Graphene Fillers. Journal of the European Ceramic Society, 43 (4), 1605-1612. https://doi.org/10.1016/j.jeurceramsoc.2022.11.068. |
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