Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10645212 | Journal of Nuclear Materials | 2005 | 8 Pages |
Abstract
A number of electrochemical experiments were employed to investigate the effects of hydrogen on the corrosion of UO2 under nuclear waste disposal conditions. A combination of corrosion potential (ECORR) measurements and cyclic voltammetry have indicated that dissolved hydrogen can polarize the UO2 surface to reducing potentials; i.e., to ECORR values more negative then those observed under anoxic (argon-purged) conditions. A comparison of the behaviours of SIMFUEL specimens with and without incorporated noble metal ε-particles indicates that these particles may act as catalytic electrodes for H2 oxidation, H2 â 2eâ + 2H+. It is the galvanic coupling of these particles to the UO2 matrix which suppresses the fuel corrosion potential.
Related Topics
Physical Sciences and Engineering
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Nuclear Energy and Engineering
Authors
M.E. Broczkowski, J.J. Noël, D.W. Shoesmith,