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W-Diamond/Cu-Diamond nanostructured composites for fusion devices

Published online by Cambridge University Press:  15 March 2011

D. Nunes
Affiliation:
Associação Euratom/IST, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal ICEMS, Departamento de Engenharia de Materiais, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
V. Livramento
Affiliation:
LNEG, Departamento de Materiais e Tecnologias de Produção, Estrada do Paço do Lumiar, 1649-038 Lisboa, Portugal
J.B. Correia
Affiliation:
LNEG, Departamento de Materiais e Tecnologias de Produção, Estrada do Paço do Lumiar, 1649-038 Lisboa, Portugal
R. Mateus
Affiliation:
Associação Euratom/IST, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
P.A. Carvalho
Affiliation:
Associação Euratom/IST, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal ICEMS, Departamento de Engenharia de Materiais, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
N. Shohoji
Affiliation:
LNEG, Departamento de Materiais e Tecnologias de Produção, Estrada do Paço do Lumiar, 1649-038 Lisboa, Portugal
H. Fernandes
Affiliation:
Associação Euratom/IST, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
C. Silva
Affiliation:
Associação Euratom/IST, Instituto de Plasmas e Fusão Nuclear, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal
E. Alves
Affiliation:
ITN, Instituto Tecnológico e Nuclear, Estrada Nacional 10, 2686-953 Sacavém, Portugal
K. Hanada
Affiliation:
National Institute of Advanced Industrial Science and Technology (AIST), 1-2-1 Namiki, Tsukuba, Ibaraki 305-8564, Japan
E. Osawa
Affiliation:
NanoCarbon Research Institute, Shinshu University, 386-8567 Ueda-shi Tokida 3-15-1, Nagano, Japan
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Abstract

A novel material design for nuclear fusion reactors is proposed based on Cu-Diamond and W-Diamond nanocomposites. The proposed design involves the production of W/W-Diamond/CuDiamond/Cu functionally graded material. W, W-Diamond, Cu-Diamond and Cu nanostructured composite powders were produced independently by mechanical alloying and subsequently consolidated/welded through spark plasma sintering. Modulation of processing parameters allowed controlling the extent of unfavourable conversion of Diamond into tungsten carbide, as well as to overcome the Diamond intrinsically difficult bonding to copper. Microstructural features and microhardness of the as-produced materials are presented.

Type
Research Article
Copyright
Copyright © Materials Research Society 2009

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References

[1] Andreani, R., Gasparotto, M., Fusion Eng. and Design 61/62 (2002) 27 CrossRefGoogle Scholar
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[5] Livramento, V., Correia, J. B., Shohoji, N., Osawa, E., Diamond Relat. Mater. 16 (2007) 202204 CrossRefGoogle Scholar
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[7] Marques, M.T., Ferraria, A.M., Correia, J.B., Rego, A.M. Botelho do, Vilar, R., Mat. Chem. and Phys. 109 (2008) 174180 CrossRefGoogle Scholar

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