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Memorias de investigación
Ponencias en congresos:
High temperature mechanical behavior of WC-Cu thermal barriers for fusion applications
Año:2017
Áreas de investigación
  • Ingenierías
Datos
Descripción
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.
Internacional
Si
Nombre congreso
European Congress and Exhibition on Advanced Materials and Processes
Tipo de participación
960
Lugar del congreso
Revisores
Si
ISBN o ISSN
0000-0000
DOI
Fecha inicio congreso
17/09/2017
Fecha fin congreso
22/09/2017
Desde la página
1
Hasta la página
1
Título de las actas
High temperature mechanical behavior of WC-Cu thermal barriers for fusion applications
Esta actividad pertenece a memorias de investigación
Participantes
  • 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 Ygnacio Pastor Caño (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • 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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