The paper reports the effect of high-current pulsed electron beam (HCPEB) processing of the Zr-1%Nb alloy as one of the most widely used in water-cooled nuclear reactors, based on the kinetics of its oxidation at 1,200°C in air and steam (these conditions are typical for potential loss-of-coolant accidents). It was shown that HCPEB processing caused a change in the surface morphology of the samples. In particular, craters with diameters of about 100 μm were found on the modified surfaces. They had initiated at an energy density of 5 J/cm2 and were characterized by relevant reliefs with microcracks. After HCPEB processing at 10 J/cm2, the craters were deeper with fractured surface layers. In addition, a pronounced surface relief corresponding to quenched martensitic microstructures was observed on the modified sample surfaces that had formed due to high heating and cooling rates. Due to sufficient degradation of the sample surfaces after HCPEB processing at 10 J/cm2, the kinetics of high-temperature oxidation was estimated only for the as-received samples and ones treated at 5 J/cm2. It was found that the as-received samples showed slightly greater weight gain levels in both air and steam environments, which fully correlated with the thickness ratio of the oxide, α-Zr(O), and prior-β layers. These phenomena and further research directions were discussed.
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1 February 2022
Research Article|
December 28 2021
Technical Note: Effect of High-Current Pulsed Electron Beam Processing of Zr-1%Nb Alloy on Its Oxidation Kinetics at 1,200°C in Air and Steam
Mikhail Slobodyan;
Mikhail Slobodyan
‡
*Tomsk Scientific Center of the Siberian Branch of the Russian Academy of Sciences; 10/4, Akademicheskii Prospekt, Tomsk, Russia, 634055.
‡Corresponding author. E-mail: [email protected].
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Konstantin Ivanov;
Konstantin Ivanov
**Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences; 2/4, Akademicheskii Prospekt, Tomsk, Russia, 634055.
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Maxim Elkin;
Maxim Elkin
***Polyus’ Research and Production Center; 56v, Kirov Prospekt, Tomsk 634050, Russia.
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Vasiliy Klimenov;
Vasiliy Klimenov
****Tomsk Polytechnic University; 30, Lenin Prospekt, Tomsk 634050, Russia.
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Sergey Pavlov;
Sergey Pavlov
****Tomsk Polytechnic University; 30, Lenin Prospekt, Tomsk 634050, Russia.
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Gennady Remnev;
Gennady Remnev
****Tomsk Polytechnic University; 30, Lenin Prospekt, Tomsk 634050, Russia.
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Irina Strelkova;
Irina Strelkova
****Tomsk Polytechnic University; 30, Lenin Prospekt, Tomsk 634050, Russia.
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Vladislav Tarbokov
Vladislav Tarbokov
****Tomsk Polytechnic University; 30, Lenin Prospekt, Tomsk 634050, Russia.
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CORROSION (2022) 78 (2): 163–167.
Citation
Mikhail Slobodyan, Konstantin Ivanov, Maxim Elkin, Vasiliy Klimenov, Sergey Pavlov, Gennady Remnev, Irina Strelkova, Vladislav Tarbokov; Technical Note: Effect of High-Current Pulsed Electron Beam Processing of Zr-1%Nb Alloy on Its Oxidation Kinetics at 1,200°C in Air and Steam. CORROSION 1 February 2022; 78 (2): 163–167. doi: https://doi.org/10.5006/3942
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