Barrier Properties of Cr/Ta-Coated Zr-1Nb Alloy under High-Temperature Oxidation; Metals; Vol. 14, iss. 6

Barrier Properties of Cr/Ta-Coated Zr-1Nb Alloy under High-Temperature Oxidation

Bibliographic Details
Parent link:Metals.— .— Basel: MDPI AG
Vol. 14, iss. 6.— 2024.— Article number 645, 17 p.
Corporate Author: National Research Tomsk Polytechnic University (570)
Other Authors: Syrtanov M. S. Maksim Sergeevich, Korneev S. P. Stepan Pavlovich, Kashkarov E. B. Egor Borisovich, Sidelev D. V. Dmitry Vladimirovich, Moskvichev E. N. Evgeny Nikolaevich, Kudiyarov V. N. Victor Nikolaevich
Summary:In this paper, Cr (8 μm)/Ta (3 μm) bilayer coatings deposited on a Zr-1Nb alloy substrate were investigated and compared with a Cr-coated alloy under high-temperature steam oxidation at 1200–1400 °C. The bilayer coatings with α- and β-Ta interlayers were obtained by magnetron sputtering. The Cr/Ta-coated samples were studied using scanning electron microscopy (SEM), X-ray diffraction (XRD), and optical microscopy (OM). The coating with an α-Ta interlayer can suppress the interdiffusion of chromium and zirconium more effectively up to 1330 °C in comparison with the coating having a β-Ta interlayer. The weight gain of the α-Ta-coated samples after oxidation at 1200 °C for 2000 s was 5–6 times lower than that of the Cr-coated Zr alloy samples. Oxidation at 1400 °C for 120 s showed no significant difference in the weight gain of the Cr- and Cr/Ta-coated Zr-1Nb alloy samples. It was shown that the effect of suppression of Zr-Cr interdiffusion by the barrier coating (α- and β-Ta) is only short-term.
Текстовый файл
Language:English
Published: 2024
Subjects:
magnetron sputtering
zirconium alloy
chromium and tantalum diffusion barriers
high-temperature oxidation
in situ XRD studies
interdiffusion
BDBA
труды учёных ТПУ
электронный ресурс
Online Access:https://doi.org/10.3390/met14060645
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=674346

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