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김지현

Kim, Ji Hyun
UNIST Nuclear Innovative Materials Lab.
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A Study on the Relationship between Electronic Structure and Corrosion Characteristics of Zirconium Alloy in High-temperature Hydrogenated Water

Author(s)
Kim, TaehoKim, SeunghyunLee, YunjuKim, NamdongBahn, Chi BunCouet, AdrienKim, Ji Hyun
Issued Date
2019-08
DOI
10.1016/j.corsci.2019.05.035
URI
https://scholarworks.unist.ac.kr/handle/201301/27020
Fulltext
https://www.sciencedirect.com/science/article/pii/S0010938X19300101
Citation
CORROSION SCIENCE, v.157, pp.180 - 188
Abstract
The corrosion behavior of zirconium alloy was investigated using synchrotron scanning transmission X-ray microscopy and X-ray absorption spectroscopy. Scanning transmission X-ray micrographs showed different electronic structures at the oxide/metal interface of Zr–Nb–Sn alloy after exposure to high-temperature hydrogenated water. The orbital hybridization structure at the oxide/metal interface exhibited weaker t2g and eg peaks in X-ray absorption spectra, suggesting that zirconium suboxide can form just above the oxide/metal interface. The suboxide layer that formed at a high dissolved hydrogen concentration is thicker than the suboxide layer that formed at a normal dissolved hydrogen concentration after 100 d of oxidation.
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
ISSN
0010-938X
Keyword (Author)
AlloyZirconiumAFSTEMOxidation
Keyword
METAL-OXIDE INTERFACEDISSOLVED HYDROGENMETAL/OXIDE INTERFACENB ALLOYBEHAVIORPHASEFILMSOXIDATIONEDGEMICROSTRUCTURE

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