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Plasma-Material Interaction Data Set 97

Permeation of H in Steel

$$ P = P_0 \exp\left(-\frac{E_\mathrm{p}}{k_\mathrm{B}T}\right) $$

[In the above formula, the Boltzmann constant is expressed in \(\mathrm{eV\,K^{-1}}\).]

Comment

Heat treated 316L SS. Pressure dependence of permeability: ~P^0.5 for 316L. Data provided by M. Lavrentiev (UKAEA, 2024) with permission from STEP.

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  1. B73: K. Forcey, D. Ross, J. Simpson, D. Evans, "Hydrogen transport and solubility in 316L and 1.4914 steels for fusion reactor applications ", Journal of Nuclear Materials 160, 117-124 (1988). [10.1016/0022-3115(88)90038-4]