Artículo
Hardness and flexural strength of single-walled carbon nanotube/alumina composites
Autor/es | Gallardo López, Ángela María
Poyato Galán, Rosalía Morales Rodríguez, Ana Fernández Serrano, Antonia Muñoz Bernabé, Antonio Domínguez Rodríguez, Arturo |
Departamento | Universidad de Sevilla. Departamento de Física de la Materia Condensada |
Fecha de publicación | 2014 |
Fecha de depósito | 2017-05-17 |
Publicado en |
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Resumen | This work adds new experimental facts on room temperature hardness and flexural strength of alumina and composites with 1, 2, 5 and 10 vol% single-walled carbon nanotubes (SWNT) with similar grain size. Monolithic Al2O3 ... This work adds new experimental facts on room temperature hardness and flexural strength of alumina and composites with 1, 2, 5 and 10 vol% single-walled carbon nanotubes (SWNT) with similar grain size. Monolithic Al2O3 and composites were spark plasma sintered (SPS) in identical conditions at 1300 &Deg;C, achieving high density, submicrometric grain size and a reasonably homogeneous distribution of SWNT along grain boundaries for all compositions with residual agglomerates. Vickers hardness values comparable to monolithic alumina were obtained for composites with low (1 vol%) SWNT content, though they decreased for higher concentrations, attributed to the fact that SWNT constitute a softer phase. Three-point bending flexural strength also decreased with increasing SWNT content. Correlation between experimental results and microstructural analysis by electron microscopy indicates that although SWNT agglomerates have often been blamed for detrimental effects on the mechanical properties of these composites, they are not the main cause for the reported decay in flexural strength. |
Agencias financiadoras | Ministerio de Ciencia e Innovación (MICIN). España Junta de Andalucía |
Identificador del proyecto | MAT2009-11078
MAT2012-34217 P12-FQM-1079 |
Cita | Gallardo López, A.M., Poyato, R., Morales Rodríguez, A., Fernández Serrano, A., Muñoz Bernabé, A. y Domínguez Rodríguez, A. (2014). Hardness and flexural strength of single-walled carbon nanotube/alumina composites. Journal of Materials Science, 49 (20), 1-31. |
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JMSC-D-14-01192(1)_after major.pdf | 2.111Mb | [PDF] | Ver/ | |