Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
WC-Cu thermal barriers for fusion applications
Year:2018
Research Areas
  • Engineering
Information
Abstract
WC-Cu cermets have been devised for thermal barriers between the plasma facing tungsten tiles and the copper-based heat sink in the first wall of nuclear fusion reactors. Composite materials with 50 and 75?v/v% WC have been prepared by hot pressing at 1333 and 1423?K with pressures of 37 and 47?MPa, respectively. Microstructural changes have been investigated by scanning electron microscopy coupled with energy dispersive X-ray spectroscopy and X-ray diffraction. The materials consolidated have also been evaluated in terms of Archimedes' density, thermal diffusivity, Vickers hardness and elastic modulus. Implantation was carried out at room temperature with Ar+ at 100?keV ion beam with a fluence of 4?·?1020?at/m2. The materials consisted of homogeneous dispersions of WC particles in a Cu matrix and presented densifications of about 90%. Incipient swelling in copper-rich regions have been observed on the implanted surfaces, however no significant changes have been detected by X-ray diffraction. Higher WC content in the cermet materials increased hardness and the elastic modulus. The cermets' thermal diffusivity was significantly lower than that of pure copper or tungsten, as desirable for a thermal barrier.
International
Si
JCR
Si
Title
Surface & Coatings Technology
ISBN
0257-8972
Impact factor JCR
2,589
Impact info
Datos JCR del año 2016
Volume
In Press,
10.1016/j.surfcoat.2018.02.086
Journal number
-
From page
1
To page
5
Month
FEBRERO
Ranking
4/19 (Impact factor: 2,589) en MATERIALS SCIENCE, COATINGS & FILMS
Participants
  • Autor: M. Dias
  • Autor: F. Guerreiro
  • Autor: Elena Maria Tejado Garrido (UPM)
  • Autor: J.B. Correia
  • Autor: U.V. Mardolcar
  • Autor: M. Coelho
  • Autor: Teresa Palacios Garcia (UPM)
  • Autor: Jose Ignacio Pastor Caño (UPM)
  • Autor: P. A. Carvalho
  • Autor: E. Alves
Research Group, Departaments and Institutes related
  • Creador: Centro o Instituto I+D+i: CENTRO INVEST. MATERIALES ESTRUCTURALES (CIME)
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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