High temperature hydrogen diffusion in zirconium, niobium, tantalum

Vostryakov A.A., Pastukhov E.A., Sidorov N.I., Chenzov V.P.

KEY WORDS:

Diffusion, hydrogen, liquid state, refining, molecular dynamics

ABSTRACT:

Hydrogen diffusion coefficients in refractory metals at temperatures close to the melting point in liquid state are of great interest for the liquid state metals theory, for the refining technology development and production of hydrogen purifying membranes. The data on Zr, Nb, and Ta are systemized. The analysis of Arrhenius equation and the results extrapolation to the premelting zone allowed evaluating the temperature range, for which the experiment is hindered.


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