Abstract
Effectiveness of zirconium-oxide surface as hydrogen barrier for Zr-2.5(wt%)Nb alloy has been investigated. Performances of the samples without and with oxide surface layers, which have been developed through two different routes, pulsed laser deposition (PLD) and autoclaving, have been evaluated with the help of thermo-gravimetric analysis (TGA). Pulsed laser deposited specimen has shown significant reduction in hydrogen absorption with respect to other autoclaved and bare specimens. Noticeably, the high hydrogen absorption in autoclaved sample and the significant drop in the absorption after coating with zirconium oxide bring out the importance of the adherent and impervious surface barrier developed using PLD in the present study.
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