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Materials integration issues for high performance fusion power systems

1998; Elsevier BV; Volume: 258-263; Linguagem: Inglês

10.1016/s0022-3115(98)00355-9

1873-4820

Dale Smith, M.C. Billone, S. Majumdar, R.F. Mattas, D.K. Sze,

Nuclear reactor physics and engineering

One of the primary requirements for the development of fusion as an energy source is the qualification of materials for the first-wall/blanket system that will provide high performance and exhibit favourable safety and environmental features. Both economic competitiveness and the environmental attractiveness of fusion will be strongly influenced by the materials constraints. A key aspect is the development of a compatible combination of materials for the various functions of structure, tritium breeding, coolant, neutron multiplication and other special requirements for a specific system. This paper presents an overview of key materials integration issues for high performance fusion power systems. Issues such as: chemical compatibility of structure and coolant, hydrogen/tritium interactions with the plasma facing/structure/breeder materials, thermomechanical constraints associated with coolant/structure, thermal-hydraulic requirements, and safety/environmental considerations from a systems viewpoint are presented. The major materials interactions for leading blanket concepts are discussed.