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Hydrogen retention and release in first-wall coatings for tokamaks

Authors
Journal
Thin Solid Films
0040-6090
Publisher
Elsevier
Publication Date
Volume
63
Issue
2
Identifiers
DOI: 10.1016/0040-6090(79)90027-0

Abstract

Abstract The hydrogen retention and release of two first-wall coating materials, TiB 2 and B 4C, were measured. Hydrogen is released from TiB 2 at substantially lower temperatures or laser energy fluxes (pulsed annealing) than for B 4C. Hydrogen also diffuses to a much smaller extent into TiB 2 than into B 4C. On the basis of tritium inventory control, TiB 2 appears to be superior to B 4C.

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