Kinetics of hydride front in Zircaloy-2 and H release from a fractional hydrided surface
Scheme of the experimental equipment used to compare the hydriding resistance of claddings under a gas phase fluxing along the tube. The H arrow represents the H atomic flux that dissolves and precipitates in the tube wall. A very small proportion is able to reach the tube outer surface and desorbs to the UHV chamber in the form of (see text). Heated sample , temperature , distance between voltage .
Polished cladding sections corresponding to the center of different claddings showing the progression of the hydriding rim.
(a) HDE and its comparison with the hydride rim thickness. (b) shows the thickness vs time dependence. The scaling factors are shown for each case, as well as the energy needed to produce a hydride rim of in thickness per unit of cladding length, factor .
Hydriding dissipated power (HDP) vs rim thickness showing a near ideal dependence.
vs rim thickness and the agreement with the proposed desorption model.
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