The embrittlement of Fe-based amorphous alloys was investigated, and H diffusion coefficients (figure 12) were deduced from the results.
Hydrogen Embrittlement of Some Fe-Base Amorphous Alloys. M.Nagumo, T.Takahashi: Materials Science and Engineering, 1976, 23[2-3], 257-60
Table 79
Diffusivity of H in Fe40Ni40P14B6
Temperature (K) | Pressure (Pa) | Method | D (m2/s) |
333 | 105 | time lag | 3.36 x 10-14 |
333 | 105 | transient | 3.16 x 10-14 |
338 | 105 | time lag | 4.39 x 10-14 |
338 | 105 | transient | 4.31 x 10-14 |
343 | 105 | time lag | 5.59 x 10-14 |
343 | 105 | transient | 5.38 x 10-14 |
353 | 105 | time lag | 9.61 x 10-14 |
353 | 105 | transient | 9.57 x 10-14 |
343 | 7.5 x 104 | time lag | 5.22 x 10-14 |
343 | 7.5 x 104 | transient | 5.11 x 10-14 |
343 | 1.1 x 104 | time lag | 4.80 x 10-14 |
343 | 1.1 x 104 | transient | 4.86 x 10-14 |
343 | 4 x 103 | time lag | 5.04 x 10-14 |
343 | 4 x 103 | transient | 4.83 x 10-14 |