An investigation was made of the H permeability of Ni-8.5%Mn, and ordered or disordered Ni3Mn, at temperatures ranging from 650 to 1100K. The H permeability through Ni-8.5%Mn obeyed a linear Arrhenius relationship, with an activation energy of 25kcal/mol. In the case of Ni3Mn, the H permeability decreased with increasing disorder.

J.P.Simakov, P.V.Geld, M.M.Shteinberg, V.A.Goltsov: Metody Opred. Issled. Sostoyaniya Gazov Metal., 1968, 250-2