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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 \(\mathrm{eV\,K^{-1}}\).]

Comment

Fitting expression for flux vs temperature for diffusivity. Data provided by M. Lavrentiev (UKAEA, 2024) with permission from STEP.

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  1. 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]