The diffusivity of H on the surface was determined by performing steady-state flux measurements on a porous disk of spectroscopically pure material. The diffusivity at 37C was equal to 3 x 10-8cm2/s. This value agreed well with previous field emission microscopy data.
C.N.Satterfield, H.Iino: Ind. Eng. Chem. Fundam., 1968, 7[2], 214-8
Table 105
Room-Temperature H Diffusivities in Ni
Condition | Route | D (cm2/s) |
annealed (1050C) | lattice | 3.52 x 10-10 |
annealed (1050C) | grain boundary | 2.05 x 10-8 |
aged (600C, 1h) | lattice | 3.38 x 10-10 |
aged (600C, 1h) | grain boundary | 2.13 x 10-8 |