The migration of H was studied by using a potentiostatic transient diffusion technique and a cylindrical specimen geometry. It was found that, in the region of intermediate H concentrations, the diffusivity was equal to 2.5 x 10-7cm2/s. For high H concentrations in the α-phase, the diffusivity was equal to 3.1 x 10-7cm2/s.

R.U.Bruners, J.M.Maksimov, B.I.Podlovehenko: Elektrokhimiya, 1986, 22[2], 264-7. [Soviet Electrochemistry, 1986, 22[2], 239-42]

 

Table 127

Diffusivity of H in β-PdH

 

Temperature (C)

D (cm2/s)

20

3.00 x 10-6

100

1.06 x 10-5

150

1.69 x 10-5

200

2.85 x 10-5