Microstructural and mechanical study of AL2O3/Er3Al5O12 eutectic rods grown by the laser floating zone method

Mesa, M.C.; Oliete Terraz, Patricia Beatriz; Orera, V.M.; Pastor Caño, Jose Ignacio; Martin Sanz, Antonia y Llorca Martinez, Francisco Javier (2011). Microstructural and mechanical study of AL2O3/Er3Al5O12 eutectic rods grown by the laser floating zone method. "Journal of the European Ceramic Society", v. 31 (n. 7); pp. 1241-1250. ISSN 0955-2219. https://doi.org/10.1016/j.jeurceramsoc.2010.05.004.

Descripción

Título: Microstructural and mechanical study of AL2O3/Er3Al5O12 eutectic rods grown by the laser floating zone method
Autor/es:
  • Mesa, M.C.
  • Oliete Terraz, Patricia Beatriz
  • Orera, V.M.
  • Pastor Caño, Jose Ignacio
  • Martin Sanz, Antonia
  • Llorca Martinez, Francisco Javier
Tipo de Documento: Artículo
Título de Revista/Publicación: Journal of the European Ceramic Society
Fecha: Junio 2011
Volumen: 31
Materias:
Escuela: E.T.S.I. Caminos, Canales y Puertos (UPM)
Departamento: Ciencia de los Materiales
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Eutectic rods of Al2O3–Er3Al5O12 were grown by directional solidification using the laser-heated floating zone method at rates in the range 25–1500 mm/h. Their microstructure and mechanical properties (hardness, toughness and strength) were investigated as a function of the growth rate. A homogeneous and interpenetrated microstructure was found in most cases, and interphase spacing decreased with growth rate following the Hunt–Jackson law. Hardness increased slightly as the interphase spacing decreased while toughness was low and independent of the microstructure. The rods presented very high bending strength as a result of the homogeneous microstructure, and their strength increased rapidly as the interphase spacing decreased, reaching a maximum of 2.7 GPa for the rods grown at 750 mm/h. The bending strength remained constant up to 1300 K and decreased above this temperature. The relationship between the microstructure and the mechanical properties was established from the analysis of the microstructure and of the fracture mechanisms

Más información

ID de Registro: 12134
Identificador DC: http://oa.upm.es/12134/
Identificador OAI: oai:oa.upm.es:12134
Identificador DOI: 10.1016/j.jeurceramsoc.2010.05.004
Depositado por: Memoria Investigacion
Depositado el: 10 Sep 2012 11:43
Ultima Modificación: 11 Jun 2015 15:57
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