Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
INFLUENCE OF THE MICROESTRUCTURE ON THE LIGHT SPECIES BEHAVIOUR IN IRRADIATED MATERIALS
Year:2013
Research Areas
  • Engineering
Information
Abstract
The study and understanding of the diffusion and retention of light atoms (H, D, He) which are produced by transmutation in the materials to be used in future nuclear reactors is crucial in order to develop materials with improved properties, thus with a higher radiation resistance. One present alternative to delay the appearance of blistering and exfoliation effects is the use of ultrafine grained materials with a grain size in the nanometer range. The behaviour of these materials under irradiation is very much dominated by the large density of grains boundaries which act (i) as annihilation centre for Frenkel pairs (self?healing behaviour) and (ii) as pinning centres for hydrogen. These two facts drive to delay (shift to higher irradiation fluences) the formation of overpressurized bubbles. Moreover, since the trap energy for light species at the grain boundaries is smaller than that at the radiation?induced defects, grain boundaries may favour the light species release, performing as effective diffusion panels.
International
Si
Congress
16th International Conference on Emerging Nuclear Energy Systems (ICENES 2013)
960
Place
Madrid, Spain
Reviewers
Si
ISBN/ISSN
0000-0000
Start Date
26/05/2013
End Date
30/05/2013
From page
1
To page
1
Proceedings
Participants
  • Autor: M. Panizo-Laíz (Instituto de Fusión Nuclear, UPM)
  • Autor: Nuria Gordillo Garcia (UPM)
  • Autor: Raquel Gonzalez Arrabal (UPM)
  • Autor: I. Fernández-Martínez (Instituto de Energía Solar)
  • Autor: Antonio Juan Rivera de Mena (UPM)
  • Autor: F. Briones (Instituto de Microelectrónica de Madrid)
  • Autor: F. Munnik (5Helmholtz¿Zentrum Dresden¿Rossendorf)
  • Autor: E. Tejado (Departamento de Ciencia de Materiales CISDEM, ETSI de Caminos)
  • Autor: J.Y. Pastor (Departamento de Ciencia de Materiales CISDEM, ETSI de Caminos)
  • Autor: Jose Manuel Perlado Martin (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
  • Departamento: Ingeniería Nuclear
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