Special materials for fusion reactors
Fusion technology raises problems that require new materials or the adaptation of known materials to allow proper operation in the new conditions. The material requirements will evolve with the design of the plant and may change significantly from NET to DEMO. Intense magnetic fields, superconducting coils, cryogenic temperatures, high vacuum, intense neutron fluxes, pulsed operation, thermal gradients and stresses are a few of the specific features of the fusion environment. The materials required to operate in this field must provide the best performance, the maximum safety and an acceptable cost. The physical and chemical parameters which characterise the working conditions of materials are not always well known. Other uncertainties exist in the behaviour of materials operating in the new and highly stressed conditions such as fast neutron damage and erosion of the first wall. The materials must also provide safe operation in both normal and abnormal situations. The safe operation of materials is related to the neutron induced radioactivity that affects the operational exposure, the release of radioactive effluents, the possible accidental release of radioactive materials, the maintenance operations, decommissioning of the plant and waste management.
Bibliographic Reference: Paper presented: Seminar on "Safety, Environmental Impact and Economic Prospects of Nuclear Fusion", Erice (IT), Aug. 6-12, 1989
Availability: Available from (1) as Paper EN 34942 ORA
Record Number: 199010017 / Last updated on: 1994-12-01
Original language: en
Available languages: en