Mechanical properties up to 1900 K of Al2O3/Er3Al5O12/ZrO2 eutectic ceramics grown by the laser floating zone method

Mesa, M.C. and Oliete Terraz, Patricia Beatriz and Pastor Caño, Jose Ignacio and Martin Sanz, Antonia and Llorca Martinez, Francisco Javier (2014). Mechanical properties up to 1900 K of Al2O3/Er3Al5O12/ZrO2 eutectic ceramics grown by the laser floating zone method. "Journal of the European Ceramic Society", v. 34 (n. 9); pp. 2081-2087. ISSN 0955-2219. https://doi.org/10.1016/j.jeurceramsoc.2013.11.013.

Description

Title: Mechanical properties up to 1900 K of Al2O3/Er3Al5O12/ZrO2 eutectic ceramics grown by the laser floating zone method
Author/s:
  • Mesa, M.C.
  • Oliete Terraz, Patricia Beatriz
  • Pastor Caño, Jose Ignacio
  • Martin Sanz, Antonia
  • Llorca Martinez, Francisco Javier
Item Type: Article
Título de Revista/Publicación: Journal of the European Ceramic Society
Date: August 2014
ISSN: 0955-2219
Volume: 34
Subjects:
Freetext Keywords: Al2O3/Er3Al5O12/ZrO2; Directionally solidified eutectic ceramics; Mechanical properties; High temperature
Faculty: E.T.S.I. Caminos, Canales y Puertos (UPM)
Department: Ciencia de los Materiales
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Directionally solidified Al2O3–Er3Al5O12–ZrO2 eutectic rods were processed using the laser floating zone method at growth rates of 25, 350and 750 mm/h to obtain microstructures with different domain size. The mechanical properties were investigated as a function of the processing rate. The hardness, 15.6 GPa, and the fracture toughness, 4 MPa m1/2, obtained from Vickers indentation at room temperature were practically independent of the size of the eutectic phases. However, the flexural strength increased as the domain size decreased, reaching outstanding strength values close to 3 GPa in the samples grown at 750 mm/h. A high retention of the flexural strength was observed up to 1500 K in the materials processed at 25 and 350 mm/h, while superplastic behaviour was observed at 1700 K in the eutectic rods solidified at the highest rate of 750 mm/h

Funding Projects

TypeCodeAcronymLeaderTitle
Government of Spain2009-13979UnspecifiedUnspecifiedUnspecified

More information

Item ID: 35457
DC Identifier: http://oa.upm.es/35457/
OAI Identifier: oai:oa.upm.es:35457
DOI: 10.1016/j.jeurceramsoc.2013.11.013
Official URL: http://www.sciencedirect.com/science/article/pii/S0955221913005190
Deposited by: Memoria Investigacion
Deposited on: 11 Jun 2015 18:04
Last Modified: 16 May 2019 07:26
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