Influences of induced elastic fields on permeation of hydrogen in Palladium and Palladium alloys

摘要

Recent hydrogen permeation studies in Palladium and Palladium alloys have provided definite evidence for the influence of diffusion induced elastic stress on permeation processes. In this work, an approximate space-time variation of hydrogen concentration will be assumed. Using this concentration, variations of flux and pressure with time are computed. General agreements of these computed variations with experimental results are indicated. Possible effects of dissolved hydrogen in metallic membranes and average hydrogen concentration gradients imposed on the permeation processes are discussed. (author). 37 refs, 4 figs. (Atomindex citation 28:040950)