Hydrogen solubility in liquid lithium–sodium alloys (90, 50, and 20 at% Li)

Hydrogen solubility in liquid Li–Na alloys (20, 50, and 90 at% Li) at 673, 773, and 873 K was investigated by adding and extracting hydrogen through the wall of a capsule made of pure iron. Hydrogen solubility in the Li90Na10 alloy was almost similar to that in pure Li while for Li50Na50 and Li20Na80, it was one and two orders of magnitude smaller, respectively. No obvious difference in temperature dependence was observed, similar to the case for pure Li. Li–Na alloy can thus be a potential liquid breeding material with almost all of the advantages of the Li blanket system and free of most of its drawbacks.