Increase of Tritium Permeation Through Resistant Metals at 323 K by Lattice Defects
Fusion Science and Technology / Volume 14 / Number 2P2A / September 1988 / Pages 701-706
Tritium Properties and Interactions with Material / Proceedings of the Third Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Toronto, Ontario, Canada, May 1-6, 1988) / dx.doi.org/10.13182/FST88-A25216
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We report data on tritium permeation at 323 K and 373 K through annealed and single crystal copper for comparison with our earlier data on unannealed copper,1 and show that tritium transport along grain boundaries or other lattice defects controls the overall rate at 323 K in unannealed material. Measurements on unannealed and annealed gold foil also indicate the importance of defect transport, although with gold we could not reduce the defect concentration sufficiently to measure permeation through the metal lattice. We also include permeation data on aluminum, molybdenum, tungsten, beryllium, cadmium, iridium, lead, rhenium, and silver; all of these were probably dominated by tritium transport along lattice defects.
