Diffusion of Hydrogen through Palladium

Abstract

Diffusion rates F (cm³ STP/cm² min) of hydrogen from the upstream pressure P (atm) into vacuum through a palladium sheet of thickness L (microns) are represented by $$\log \text{F=3.70+0.68\hspace{0.17em}}\log \text{P−623/T−}\log \mathrm{L,}$$ except for very thin membranes. Explanations are suggested for the wide discordance of earlier results in the study of the diffusion of hydrogen through palladium.