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Possibility of Metal Coatings on F82H as the Tritium Permeation Reduction Barrier

Hirofumi Nakamura, Toshihiko Yamanishi

Fusion Science and Technology / Volume 60 / Number 4 / Pages 1527-1530

November 2011

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Possibility of metal coatings on F82H as the tritium permeation reduction coating was examined by means of deuterium permeation experiment. Metal coatings such as copper, aluminum and gold plating of 10 m thickness on outer surface of the F82H tube (250mm length, 10mm diameter and 1mm thickness) were prepared as the permeation reduction coating. Permeation Reduction Factor (PRF) of the metal coatings was evaluated by comparing the steady state permeation flux between metal plated specimens and F82H specimen. As the results, the PRF of the metal coatings at 590K were 5, 100 and >1000 for copper, aluminum and gold plating, respectively. Those results indicate the possibility that aluminum and gold plating could be applied in the tritium system as the tritium permeation reduction method.

 
 
 
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