Manometric measurements were used to study the permeation of H through medium alloy steel, with and without the addition of 0.5wt%Pd. Measurements were also made of H solubility, and this permitted the calculation of diffusion coefficients (table 78).
V.I.Arkharov, T.T.Moroz, I.A.Novokhatskii, M.I.Eremina, S.I.Khokhlova: Fiziko-Khimicheskaya Mekhanika Materialov, 1971, 7[6], 51-4
Table 78
Parameters for H Diffusion in 34KhN3M Steel with or without 0.5wt%Pd
Pd (wt%) | Temperature (C) | Do (cm2/s) | E (kcal/mol) |
0 | 300-600 | 4.7 x 10-4 | 1.6 |
0 | 750-1000 | 1.6 x 10-3 | 7.5 |
0.5 | 300-600 | 5.4 x 10-4 | 2.0 |
0.5 | 750-1000 | 1.5 x 10-3 | 7.2 |