The diffusion coefficients of hydrogen in binary Al-Li alloys containing 1, 2 and 3wt%Li were deduced from the desorption curves of samples saturated with hydrogen at 473 to 873K. Within this range, the H diffusivity in the binary Al-Li alloys investigated exhibited an Arrhenius-type temperature dependence. The rate of diffusion of hydrogen in aluminum decreased with increasing lithium addition. This was provisionally attributed to the stronger local binding energy between hydrogen and lithium atoms in the aluminum metal lattice.

Hydrogen Diffusion in Al-Li Alloys. P.N.Anyalebechi: Metallurgical Transactions B, 1990, 21[4], 649-55