Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Environmental degradation of the mechanical properties of single-crystal erbia-doped zircona fibers
Year:2007
Research Areas
  • Ceramics
Information
Abstract
The flexure strength of tetragonal ZrO2 (Er2O3) single-crystal monofilaments manufactured by the laser-heated floating zone method was measured as a function of the environment (air vs. water) and temperature (from 25 to 800 degrees C) at loading rates spanning three orders of magnitude to ascertain their susceptibility to the environmental conditions. These mechanical tests were completed with parallel tests on fully-annealed monofilarnents (to relieve the thermal residual stresses induced during growth) and by detailed analysis of the fracture surfaces using scanning electron microscopy and micro-Raman spectroscopy. While environmental susceptibility of ZrO2 (Y2O3) in previous investigations was always associated with the destabilization of the tetragonal phase, monoclinic phase was not detected on the fracture surfaces of the ZrO2 (Er2O3) monofilaments and it was concluded that slow crack growth in this material at high temperature or immersed in water was due to stress-corrosion cracking.
International
Si
JCR
No
Title
Boletín de la Sociedad Española de Cerámica y Vidreo
ISBN
0366-3175
Impact factor JCR
0
Impact info
Volume
46
Journal number
3
From page
131
To page
137
Month
MAYO
Ranking
Participants
  • Autor: Victor M. Orera
  • Autor: Jose Ignacio Pastor Caño (UPM)
  • Autor: Alvaro Ridruejo Rodriguez (UPM)
  • Autor: A. Sayir
  • Autor: Fco. Javier Llorca Martinez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Materiales Estructurales avanzados y nanomateriales
  • Departamento: Ciencia de los Materiales
S2i 2019 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)