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Microestructura y propiedades mecánicas del SiC biomórfico obtenido a partir de eucalipto


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Título alternativo: Microestructure and mechanical properties of biomorphic SiC obtained from eucalyptus
Author: Presas, M.
Pastor, J. Y.
Llorca, J.
Ramírez de Arellano López, Antonio
Martínez Fernández, Julián
Sepúlveda Ferrer, Ranier Enrique
Department: Universidad de Sevilla. Departamento de Física de la Materia Condensada
Universidad de Sevilla. Departamento de Estructuras de Edificación e Ingeniería del Terreno
Date: 2005
Published in: Boletín de la Sociedad Española de Cerámica y Vidrio, 44(6), 363-367
Document type: Article
Abstract: El desarrollo de materiales cerámicos con una estructura de tipo celular, similar a la del hueso o la madera, ha sido una cuestión que ha suscitado un gran interés en los últimos años. Su atractivo se debe al hecho de poseer una estructura porosa ...
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The development of cellular ceramics with a biological structure, like bones and wood, has been a matter of interest in recent years. A low density highly interconnected structure, perfected by evolution, rises as the principal advantage of these materials. In the case of biomimetic SiC (biomorphic SiC, or bioSiC), the fabrication process technique is quite simple: a piece of wood is pyrolysed and is infiltrated with molten silicon after, the final product is a composite Si/SiC, which replicates the wood anisotropic microstructure This work focus on the mechanical properties of bioSiC fabricated using eucalyptus wood as precursor (hard wood with a bimodal channel distribution). It has been studied the mechanical behavior of this bioSiC (compression strength, flexure strength, fracture toughness and elastic modulus) between 25 and 1350 o C. It is also discussed the relationship between mechanical behavior of the material and its microstructure.
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DOI: 10.3989/cyv.2005.v44.i6.337

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