Solubility of tritium in Pd/sub 1-Y/Ag/sub Y/ alloys (Y = 0. 00, 0. 10, 0. 20, 0. 30)

Conference · Thu Sep 01 04:00:00 EDT 1988 · Fusion Technol.; (United States)

OSTI ID:5755601

Lasser, R; Powell, G L

Solubility measurements of tritium (T) in Pd/sub 1-Y/Ag/sub Y/ alloys (Y = 0.00, 0.10, 0.20, 0.30) are reported in the temperature range of 250 K to 733 K, the pressure range below 3 bar, and the concentration range of 0.001 to 0.64 hydrogen to metal atom ratio. To study isotopic effects, the pressure-concentration-temperature relationships of the hydrogen isotopes protium (H) and deuterium (D) have been measured using the same samples and experimental setup and to temperatures as high as 1500 K using a different set up and samples. The experimental data are compared with values for H and D determined by other groups. In the case of T, most of the data presented have not been determined before. From these data the Sieverts' constants were calculated which show a strong temperature and isotope dependence. Analytical expressions, based on models that assume various degrees to which the hydrogen can perceive the alloy composition of individual sites in an alloy, are given for the Sieverts' constants that allow the calculation of the standard Gibbs free energies, enthalpies and entropies of H, D and T in these alloys.

• Research Organization: Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Festkoerperforschung; Oak Ridge National Lab., TN (USA)
• OSTI ID: 5755601
• Report Number(s): CONF-880505-
• Conference Information: Journal Name: Fusion Technol.; (United States) Journal Volume: 14:2
• Country of Publication: United States
• Language: English

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74 ATOMIC AND MOLECULAR PHYSICS
ALLOYS
ATOM TRANSPORT
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCULATION METHODS
CHEMICAL COMPOSITION
DEUTERIUM
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HYDROGEN ISOTOPES
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TEMPERATURE GRADIENTS
THERMODYNAMIC PROPERTIES
TRITIUM
VERY HIGH TEMPERATURE
YEARS LIVING RADIOISOTOPES