Radiation induced deuterium absorption for RB-SiC, HP-SiC, silicon and graphite loaded during electron irradiation

Hernández, T.; Moroño, Á.; Hodgson, E.R.; Malo, M.; Verdú, Miguel; Sanchez, François

doi:10.1016/j.fusengdes.2014.06.006

Cited by 10 publications

(2 citation statements)

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“…Tritium permeation data for ceramic coatings, although sparse and without irradiation, are also encouraging [156]. In the case of SiC materials, considerable radiation data exist for electrical and thermal conductivity, swelling, and permeation [161][162][163][164][165][166][167][168][169]. Figure 16 is illustrative of the wide range of electrical conductivities for different types of SiC [162].…”

Section: Coating Materials For Blanketsmentioning

confidence: 93%

“…Critical issues were identified at an early stage, and many successfully addressed [163,166]. However, considerable work is still required to fully understand the wide variation in electrical conductivity and hydrogen isotope trapping/diffusion [162,[166][167][168][169], as well as the transmutation problem associated with Si giving rise to high concentrations of metallic products (Mg, Al, Be) [170].…”

Section: Coating Materials For Blanketsmentioning

confidence: 99%

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Functional materials for tokamak in-vessel systems—status and developments

2017

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The challenge to be faced in ITER and DEMO, as well as future fusion power plants (PPs), by the insulating (functional) materials for use not only in the magnetic coils and heating systems but for safety and control diagnostics is daunting. The available data on thermomechanical properties (strength, swelling, thermal conductivity) indicate that suitable materials are available for doses >1 dpa. However, for the important physical properties which degrade at far lower doses, data are generally only available for doses 1 dpa, corresponding at most to ITER expectations. To address this, the selection and development of potential radiation hard materials and components for diagnostic, H&CD, and other systems for DEMO and PPs is urgently needed, and will also assist in defining the materials test requirements for materials test reactors and IFMIF. This paper reviews the current data and basic knowledge for materials required for optical, DC electric, and AC/RF dielectric applications. A short discussion of the associated R&D needs/requirements deduced from missing or limited irradiation data is also presented.

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