Measurements of hydrogen diffusion coefficient in the α-phase concentration range of the Pd/H system by the diffusion-elastic technique

The diffusion-elastic technique (DE) was applied to measure the diffusivity DH of hydrogen in the α-phase of the Pd/H system at 50deg C and to investigate the influence of boundary and initial conditions on derived value of DH. The agreement between experimental curves and theoretical shapes and coincidence with available data indicate a good fit of the model to the chosen experimental regimes. High sensitivity of the DE-effect as compared to the Gorsky effect allows a close check of this fit significant for a correct interpretation of involved processes and results. (orig.)