Mechanical and electrical properties of low SWNT content 3YTZP composites. Issue 8 (August 2015)

• Record Type: Journal Article
• Authors: Poyato, R.; Macías-Delgado, J.; García-Valenzuela, A.; Gallardo-López, Á.; Morales-Rodríguez, A.; Muñoz, A.; Domínguez-Rodríguez, A.
• Is Part Of: Journal of the European Ceramic Society. Volume 35:Issue 8(2015:Aug.)
• Page Start: 2351
• Page End: 2359
• Publication Date: 2015-08
• Subjects: Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2015.02.022
• Languages: English
• ISSNs: 0955-2219

Abstract

<abstract abstract-type="author" id="abs0005"> <title id="sect0005">Abstract</title> <sec> <p id="spar0005">Fully dense 3 mol% Y₂O₃–ZrO₂ (3YTZP) composites with low single wall carbon nanotube content (0.5, 1 and 1.5 vol% 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.</p> </sec> </abstract>