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Solubility of H, D, and T in palladium-silver alloys at low concentrations

Conference ·
OSTI ID:5701326
The first solubility measurements of tritium (T) in Pd/sub 1-Z/Ag/sub Z/ (Z = 0.10, 0.20, 0.30) alloys are reported in the temperature range of 250 to 733/sup 0/K, the pressure range below 1 atmosphere, and the concentration range of 0.001 to 0.05 hydrogen-to-metal atom ratio. In addition, the pressure-concentration-temperature relationships of the stable hydrogen isotopes H and D were determined using the same or similar samples under similar experimental conditions over the temperature range of 250 to 1300/sup 0/K. Analytical expressions are given for the equilibrium constants and activity parameters so that the Gibbs free energies, enthalpies, and entropies of solution of H, D, and T in these Pd-Ag alloys can be calculated. Using the assumption that there is only one kind of hydrogen site and that the only interaction between the alloy and hydrogen varies uniformly with alloy content, the ground state energies of hydrogen isotopes dissolved in these alloys are determined.
Research Organization:
Oak Ridge Y-12 Plant, TN (USA); Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Festkoerperforschung
DOE Contract Number:
AC05-84OS21400
OSTI ID:
5701326
Report Number(s):
Y/DU-489; CONF-8605114-6; ON: DE86012842
Country of Publication:
United States
Language:
English