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Melt infiltrated W-Cu composites as advanced heat sink materials for plasma facing components of future nuclear fusion devices
Year:2016
Research Areas
  • Engineering
Information
Abstract
The exhaust of power and particles is regarded as a major challenge in view of the design of a nuclear fusion demonstration power plant (DEMO). In such a reactor, highly loaded plasma facing components (PFCs), like the divertor targets, have to withstand both severe high heat flux (HHF) loads and considerable neutron irradiation. Existing divertor target designs, as e.g. the ITER-like monoblock concept, make use of monolithic W and Cu material grades that are combined to a PFC. Such an approach, however, bears difficulties as W and Cu are materials with inherently different thermomechanical properties and their optimum operating temperature windows do not overlap. Against this background, W-Cu composite materials are promising candidates regarding the application to the heat sink of highly loaded PFCs. In principle, these materials feature a high thermal conductivity combined with acceptably ductile behaviour due to a coherent Cu or Cu alloy matrix. Moreover, they exhibit strength properties significantly higher compared to the used matrix material due to the presence of the W inclusions. Above all, W-Cu composite materials offer metallurgical flexibility as their macroscopic properties can be tailored by customising their microstructure. The contribution will present the latest results regarding the industrially viable manufacturing and characterisation of W-Cu composite materials produced by means of liquid Cu melt infiltration of open porous W preforms. On the one hand, this includes composites manufactured by infiltrating powder metallurgically produced W skeletons. On the other hand, W-Cu composites based on textile technologically produced fibrous reinforcement preforms are discussed. Furthermore, it will be pointed out how these materials can be integrated into PFCs.
International
Si
Congress
29th Symposium on Fusion Technology
960
Place
Praga, Republica Checa
Reviewers
Si
ISBN/ISSN
00000000
Start Date
05/09/2016
End Date
09/09/2016
From page
434
To page
434
29th Symposium on Fusion Technology Book of abstracts
Participants
  • Autor: Alexander von Müller (Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching, Germany;Technische Universität München, Boltzmannstraße 15, 85748 Garching, Germany)
  • Autor: Elena Maria Tejado Garrido (UPM)
  • Autor: Magadalena Galatanu (National Institute of Material Physics, Atomistilor Street 405 A, Magurele, Ilfov 77125, Romania, Romania)
  • Autor: Dagmar Ewert (Institut für Textil- und Verfahrenstechnik, Körschtalstraße 26, 73770 Denkendorf, Germany)
  • Autor: Henri Greuner (Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, D-85748 Garching, Germany)
  • Autor: Markus Milwich (Institut für Textil- und Verfahrenstechnik, Körschtalstraße 26, 73770 Denkendorf, Germany)
  • Autor: Rudolf Neu (Max-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, D-85748 Garching, Germany)
  • Autor: Jose Ignacio Pastor Cańo (UPM)
  • Autor: Siefken Udo (Louis Renner GmbH, Schützenstraße 7, 85221 Dachau, Germany)
  • Autor: Jeong-Ha You (Max-Planck-Institut für Plasmaphysik, Boltzmannstraße 2, 85748 Garching, Germany)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Materiales Estructurales Avanzados y Nanomateriales
  • Centro o Instituto I+D+i: CENTRO INVEST. MATERIALES ESTRUCTURALES (CIME)
  • Departamento: Ciencia de Materiales
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