Pt catalytic effects on the corrosion and hydrogen chemisorption properties of Zircaloy-2

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dc.contributor.author Rowthu, Sriharitha
dc.contributor.author Grundler, Pascal V.
dc.contributor.author Muller, Elisabeth
dc.contributor.author Ritter, Stefan
dc.coverage.spatial United States of America
dc.date.accessioned 2020-12-17T09:06:01Z
dc.date.available 2020-12-17T09:06:01Z
dc.date.issued 2021-02
dc.identifier.citation Rowthu, Sriharitha; Grundler, Pascal V.; Muller, Elisabeth and Ritter, Stefan, “Pt catalytic effects on the corrosion and hydrogen chemisorption properties of Zircaloy-2”, Journal of Nuclear Materials, DOI: 10.1016/j.jnucmat.2020.152716, vol. 544, Feb. 2021. en_US
dc.identifier.issn 0022-3115
dc.identifier.uri http://dx.doi.org/10.1016/j.jnucmat.2020.152716
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/6135
dc.description.abstract Noble metals are added to boiling water reactors (BWRs) to mitigate stress corrosion cracking of structural components made from steels and Ni-based alloys and this technology is referred to as Noble Metal Chemical Addition (NMCA) or NobleChemTM. There is a growing concern that NMCA can cause unwanted harmful effects on the corrosion and hydrogen uptake properties of Zircaloy-2 fuel cladding. To investigate this, we have subjected Zircaloy-2 fuel claddings to out-of-pile BWR conditions in a custom-built autoclave. These claddings are oxidized in pressurized hot water (280 �C, 9 MPa) for 25, 60 and 150 days, wherein Pt nanoparticles (?10 nm) were simultaneously injected. Cross-sectional focused ion beam cuts made at the oxide-metal interface reveal that the oxide growth is not significantly influenced by the local Pt loadings (? 1 �g/cm2). Surprisingly, an inverse correlation was observed between oxide thicknesses and metal's hydrogen contents. Interestingly, Pt catalysts have led to diminished hydrogen absorption in specimens with liner exposed to the hot water. Overall, Pt catalysts exhibited no detrimental effects on the corrosion rate and hydrogen absorption in Zircaloy-2.
dc.description.statementofresponsibility by Sriharitha Rowthu, Pascal V. Grundler, Elisabeth Muller and Stefan Ritter
dc.language.iso en_US en_US
dc.publisher Elsevier en_US
dc.subject Platinum catalysts en_US
dc.subject Boiling water reactor (BWR) en_US
dc.subject Zircaloy-2 en_US
dc.subject Corrosion mechanisms en_US
dc.subject Hydrogen absorption en_US
dc.title Pt catalytic effects on the corrosion and hydrogen chemisorption properties of Zircaloy-2 en_US
dc.type Article en_US
dc.relation.journal Journal of Nuclear Materials


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