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Tritium permeation behavior in SiC/SiC composites

Isobe, Kanetsugu; Yamanishi, Toshihiko; Konishi, Satoshi*

The measurement of tritium permeation behavior of NITE-SiC/SiC composites in both low tritium partial pressure and tritium diluted with hydrogen was carried out. Steady-state tritium permeation fluxes of NITE-SiC/SiC that has low permeability of hydrogen could be measured successfully by using tritium, even though low partial pressure (0.6 Pa). Steady-state tritium permeation fluxes were estimated to be 9.5$$times$$10$$^{-12}$$[mol/m$$^{2}$$sec]. In the experiment of tritium diluted with hydrogen, it was found that steady-states permeation fluxes was decreased with the increase of distillation rate, although the partial pressure of tritium in all condition was same (0.6 Pa).

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Category:Nuclear Science & Technology

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