Study of mechanism of oxidation resistance enhancement induced by preformed oxide on zirconium alloys

Lee, Cheol Min; Han, Young‐Soo; Mok, Yong-Kyoon; Sohn, Dong-Seong

doi:10.1016/j.corsci.2019.108105

Cited by 10 publications

(1 citation statement)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zirconium alloys are used as cladding materials for nuclear reactor fuel elements due to their good corrosion resistance, low thermal neutron absorption rate, and excellent mechanical properties [ 1 , 2 ]. However, it has been reported that zirconium alloys are disadvantageous in high-temperature water vapor because the oxide film produced by the oxidation reaction of metal zirconium adheres to the surface, which affects the performance of the alloy [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Isothermal Experiments on Steam Oxidation of Zr−Sn−Nb Alloy at 1050 °C: Kinetics and Process

et al. 2023

View full text Add to dashboard Cite

The isothermal steam oxidation behavior of the Zr−Sn−Nb alloy at 1050 °C was studied. In this study, the oxidation weight gain of Zr−Sn−Nb samples with oxidation durations ranging from 100 s to 5000 s was calculated. The oxidation kinetic properties of the Zr−Sn−Nb alloy were obtained. The macroscopic morphology of the alloy was directly observed and compared. The microscopic surface morphology, cross-section morphology, and element content of the Zr−Sn−Nb alloy were analyzed using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and energy disperse spectroscopy (EDS). According to the results, the cross-sectional structure of the Zr−Sn−Nb alloy consisted of ZrO2, α-Zr(O), and prior-β. During the oxidation process, its weight gain versus oxidation time curve followed a parabolic law. The thickness of the oxide layer increases. Micropores and cracks gradually appear on the oxide film. Similarly, the thicknesses of ZrO2 and α-Zr versus oxidation time were in accordance with the parabolic law.

show abstract