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Plasma-Material Interaction Data Set 212
Diffusivity of H in Ni
$$
D = D_0 \exp\left(-\frac{E_\mathrm{d}}{k_\mathrm{B}T}\right)
$$
[In the above formula, the Boltzmann constant is expressed in \(\mathrm{eV\,K^{-1}}\).]
- Material: Ni
- Material composition: 99.999%
- Method: Experiment
- Data scaled for isotope mass? No
- D0 = 5.22(18)e-7 m2 s-1
- Ed = 0.41 eV
- T = 473 – 693 K
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- B90: Y. Ebisuzaki, W. J. Kass, M. O'Keeffe, "Diffusion and Solubility of Hydrogen in Single Crystals of Nickel and Nickel—Vanadium Alloy
", The Journal of Chemical Physics 46, 1378-1381 (1967). [10.1063/1.1840860]
Comment
Time lag method for diffusivity, square root pressure dependence confirmed. Data provided by M. Lavrentiev (UKAEA, 2024) with permission from STEP.