Permeation of deuterium and tritium through the martensitic steel F82H

The permeation of deuterium and tritium through a membrane of the reduced-activation martensitic steel F82H was studied by the hydrogen permeability method on an installation at the RFNC-VNIITF. The permeability and diffusion coefficients were determined at the temperature range 490–1000 K and the pressure on the inlet side of the membrane range 800–5300 Pa. It is shown that the diffusion coefficient depends, especially in the beginning of studied temperature range, on particular conditions of preliminary annealing of the samples.