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Mechanical and electrical properties of low SWNT content 3YTZP composites

 

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Opened Access Mechanical and electrical properties of low SWNT content 3YTZP composites
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Author: Poyato Galán, Rosalía
Macías Delgado, J.
García Valenzuela, Aurelio
Gallardo López, Angela María
Morales Rodríguez, Ana
Muñoz Bernabé, Antonio
Domínguez Rodríguez, Arturo
Department: Universidad de Sevilla. Departamento de Física de la Materia Condensada
Date: 2015
Published in: Journal of the European Ceramic Society, 35 (8), 1-38.
Document type: Article
Abstract: Fully dense 3mol% Y2O3-ZrO2 (3YTZP) composites with low single wall carbon nanotube content (0.5, 1 and 1.5vol% SWNT) were prepared by colloidal processing and spark plasma sintering (SPS). SWNT were distributed at ceramic grain boundaries and also into agglomerates. Characterization of SWNT agglomerates indicated that increase in SWNT vol% does not imply an increase in agglomeration. SWNT agglomerate density was related to the evolution of hardness and fracture toughness with SWNT vol%. Electrical properties of the composites were characterized in a wide temperature range, and percolation threshold was estimated. A model allowing separation of the individual SWNT bundles contribution to resistance from the resistance due to junctions between bundles was proposed for composites with a percolating SWNT network.
Cite: Poyato, R., Macías Delgado, J., García Valenzuela, A., Gallardo López, A.M., Morales Rodríguez, A., Muñoz Bernabé, A. y Domínguez Rodríguez, A. (2015). Mechanical and electrical properties of low SWNT content 3YTZP composites. Journal of the European Ceramic Society, 35 (8), 1-38.
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URI: http://hdl.handle.net/11441/61043

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