The effect of correlations between neighbouring pores (quasi-interstices) upon the chemical diffusion coefficient of H in amorphous metals and alloys was studied. The making of allowances for such correlations was shown to lead to a significant increase in the diffusion coefficient with increasing H concentration, provided that the saddle-point energy depended upon the distortion of the pores and their mutual so-called attraction. This amounted to the development of short-range order in the substance; such that the neighbourhood of pores having the same sense of dilatation was preferred. The phenomenological parameters which affected the pore distribution function were shown, by using a 2-dimensional triangular lattice as an example, to be related not only to the radial - but also to the angular - spread of atoms in the amorphous metal.

On the Theory of Hydrogen Diffusion in Amorphous Metals and Alloys, Allowance for Pore Correlation. V.V.Kondratev, A.V.Gapontsev: Physics of Metals and Metallography, 2000, 89[2], 116-21