Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
High temperature mechanical behavior of WC-Cu thermal barriers for fusion applications
Year:2017
Research Areas
  • Engineering
Information
Abstract
The combination of tungsten carbide and copper as a thermal barrier could effectively reduce the thermal mismatch between tungsten and copper alloy, which are proposed as base armour and heat sink, respectively, in the divertor of future fusion reactors. Hence, the aim of this work is to study the thermo-mechanical properties of WC-Cu cermets fabricated by hot pressing. Focus is placed on the temperature effect and composition dependence, as the volume fraction of copper varies from 25 to 50 and 75 %. To explore this behaviour, fracture experiments are performed within a temperature range from room temperature to 800 ºC under vacuum. In addition, elastic modulus and thermal expansion coefficient are estimated from these tests. Results reveal a strong dependence of the performance on temperature and on the volume fraction of copper and, surprisingly, a slight percent of Cu (25 vol. %) can effectively reduce the large difference in thermal expansion between tungsten and copper alloy, what is a critical point for in service applications.
International
Si
Congress
European Congress and Exhibition on Advanced Materials and Processes
960
Place
Reviewers
Si
ISBN/ISSN
0000-0000
Start Date
17/09/2017
End Date
22/09/2017
From page
1
To page
1
High temperature mechanical behavior of WC-Cu thermal barriers for fusion applications
Participants
  • Autor: Elena Maria Tejado Garrido (UPM)
  • Autor: Marta Dias (Instituto Superior Técnico, Universidade de Lisboa)
  • Autor: F Guerreiro (Instituto Superior Técnico, Universidade de Lisboa)
  • Autor: J B Correira (Laboratório Nacional de Energia e Geologia, Estrada do Paço do Lumiar)
  • Autor: Teresa Palacios Garcia (UPM)
  • Autor: P A Carvalho (Instituto Superior Técnico, Universidade de Lisboa)
  • Autor: E Alves (Instituto Superior Técnico, Universidade de Lisboa)
  • Autor: Jose Ignacio Pastor Caño (UPM)
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
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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