Amorphous alloys of the form, Ni70-x/2Nb30-x/2Zrx (x = 10, 20, 30, 40, 60at%), were prepared by using the melt-spinning technique. The H permeabilities of the alloys were compared in order to deduce the effect of elemental additions. It was thus found that the H permeability of the ternary amorphous alloys increased with increasing Zr content. However, the H permeation of the Ni40Zr60 binary amorphous alloy was much lower than that of the Ni50Nb10Zr40 amorphous alloy. This indicated that Nb additions also improved the H permeability. Amorphous alloys of the form, Ni-X-Zr (X = Y, Ti, Hf, V, Nb and Ta), were then prepared in order to investigate the effect of additional elements upon the H permeation of melt-spun Ni-Zr binary amorphous alloys. It was found that

an additional element with higher H affinity was preferable, and that the Ni content should be reduced in order to improve the permeability.

Hydrogen Permeation of Melt-Spun Ni-X-Zr Amorphous Membranes. S.Yamaura, S.Nakata, H.Kimura, Y.Shimpo, M.Nishida, A.Inoue: Materials Transactions, 2005, 46[8], 1768-70