Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
H diffusion in nanoestructured as compared to massive W
Year:2012
Research Areas
  • Engineering
Information
Abstract
One of the challenges in the design of the future nuclear power plant is to develop materials capable to resist in the hostile environment of a fusion reactor. Because of its low sputtering yield, low?activation with a high melting point, high thermal conductivity, and low thermal expansion, tungsten is one of the most attractive materials proposed for first wall applications in the nuclear fusion reactors [1?3]. Even when W is assumed to be the best candidate as plasma facing material (PFM), some limitations have been identified that have to be defeated in order to fulfil specifications i. e one of the important point of concern is the light species behaviour. Light species (mainly H, D, T and He), which are present in the plasma in magnetic confinement fusion (MC) and which result from the explosion in inertial confinement fusion (IC), are implanted in the near surface region of PFM. The concentration of light species in W can lead to formation of bubbles which notably degrade its mechanical properties [4] and heat load performance. Moreover, the degradation is enhanced by the fact that ion implantation is accompanied by the production of thermal vacancies in MC and ion?induced damage in IC. In particular, in IC reactors with direct drives (HiPER), the mayor threats comes from the simultaneous arrival of a great diversity of energetic particles (mainly D, T, He y C) short time after the explosion and the subsequent arrival of a high neutron flux (with energies of up to 14 MeV/neutron).
International
No
Congress
13th edition of Trends in Nanotechnology International Conference (TNT2012)
960
Place
Madrid
Reviewers
Si
ISBN/ISSN
0000-0000
Start Date
10/09/2012
End Date
14/09/2012
From page
1
To page
1
Proceedings
Participants
  • Autor: Raquel Gonzalez Arrabal (UPM)
  • Autor: Nuria Gordillo Garcia (UPM)
  • Autor: M. Panizo (Instituto de Fusión Nuclear)
  • Autor: Antonio Juan Rivera de Mena (UPM)
  • Autor: F. Munnik
  • Autor: K. Saravanan
  • Autor: Jose Manuel Perlado Martin (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Fusión Nuclear Inercial y Tecnología de fusión
  • Departamento: Ingeniería Nuclear
  • Centro o Instituto I+D+i: Instituto de Fusión Nuclear
S2i 2020 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)