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Plasma-Material Interaction Data Set 197
Diffusivity of H in Steel
$$
D = D_0 \exp\left(-\frac{E_\mathrm{d}}{k_\mathrm{B}T}\right)
$$
[In the above formula, the Boltzmann constant is expressed in \(\mathrm{eV\,K^{-1}}\).]
- Material: Steel
- Alloy: F82H
- Method: Experiment
- Data scaled for isotope mass? No
- D0 = 1.8e-07 m2 s-1
- Ed = 0.15 eV
- T = 373 – 723 K
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- B92: E. Serra, G. Benamati, "Hydrogen behaviour in aged low activation martensitic steel F82H for fusion reactor applications
", Materials Science and Technology 14, 573-578 (1998). [10.1179/mst.1998.14.6.573]
Comment
Fitting expression for flux vs temperature for diffusivity. Data provided by M. Lavrentiev (UKAEA, 2024) with permission from STEP.