The permeability of hydrogen in unoxidized aluminum, copper, iron, gold, kovar, niobium, palladium, platinum, silver, tantalum, titanium, and vanadium.

Courtesy of REB Research & Consulting.

Graph of permeability of hydrogen in several metals, with temperature

Mols of Hydrogen/m.s.Pa^.5

Hydrogen Transport Barriers, Permeation Windows, and Sorbers

When low-permeation materials are coated on stainless steel they can reduce the rate of hydrogen transport. This is useful for sterling engines and for tritium containment in fusion reactors

High permeation materials can be used as hydrogen permeation windows and purifiers, or as hydrogen sorbers

Back arrow See a graph of the solubility of H2 in Al, Co, Cu, Fe, Ni, Nb, Pd, Pt, Ag, Ta, Sn, Th, Ti, V, and Zr.
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