A probe has been developed to determine the solubility of hydrogen in metals. The method is based on mass balance and high-pressure hydrogen produced in situ partitioning between a zirconium probe and the metal. As an example, the solubility of hydrogen in copper, SH in Cu, has been determined between 350 and 450 °C: SH\,in\,Cu=(1000±200)exp(-43000±1300RT)[mol H2/m3MPa].This solubility agrees with permeation and diffusivity measurements spanning 10 and 6 orders of magnitude, respectively.

Journal of Phase Equilibria and Diffusion
Department of Mechanical and Aerospace Engineering

Corrigall, J.L. (J. L.), St Louis, C. (C.), Coleman, C.E. (C. E.), & McRae, G. (2020). A Chemical Potential Probe to Determine the Solubility of Hydrogen in Metals: An Example with Copper. Journal of Phase Equilibria and Diffusion. doi:10.1007/s11669-019-00776-2