The diffusivity of H in these alloys was determined (table 143) by using an electrochemical permeation method. It was suggested that the first-nearest neighbor octahedral sites around solute atoms had an anti-trapping effect, and that the differences in H migration energies were independent of the type of solute.

Diffusion of Hydrogen in Pd(Ce,Y,B) Alloys. Y.Sakamoto, H.Kaneko, T.Tsukahara, S.Hirata: Scripta Metallurgica, 1987, 21[4], 415-20