The permeation of D was studied by using the gas-phase breakthrough technique at between 100 and 500C, and pressures of between 10Pa and 100kPa. It was found that the data could be described by:
log[Po (mol/s m Pa½)] = -7.04, E (eV) = 0.60
log[Do (m2/s)] = -6.29, E (eV) = 0.47
The occurrence of D-trapping within the alloys appeared to affect the bulk diffusivity values.
D.J.Mitchell, E.M.Edge: Journal of Applied Physics, 1985, 57[12], 5226-35