Kinetika vysokotemperaturnoy nitridizatsii splavov na osnove Zr-U
- 作者: Kovalev I.1, Kochanov G.1, L'vov L.1, Zufman V.1, Ogarkov A.1, Shornikov D.1,2, Tarasov B.1,2, Konovalov A.1, Shokod'ko A.1
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隶属关系:
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
- National Nuclear Research University MIFI (Moscow Engineering Physics Institute), Moscow, Russia
- 期: 编号 3 (2023)
- 页面: 66-72
- 栏目: Articles
- URL: https://journals.rcsi.science/0869-5733/article/view/147964
- DOI: https://doi.org/10.31857/S0869573323030096
- EDN: https://elibrary.ru/GVEPOH
- ID: 147964
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详细
The kinetic patterns of nitride formation have been established and the sequence of structural transformations characterizing high-temperature (at 1900 °C) nitridation of Zr-U alloys containing 2 and 5 wt.% U in the range from 3.5 to 60 minutes is presented. During high-temperature saturation with nitrogen for each composition, the solid solution (Zr,U) decomposes with the formation of composite structures ZrN-(ZrN1-n/UxEy/U)-ZrN (where E is O, N; n, x, y are stoichiometric coefficients ). During the decomposition of the solid solution, zirconium nitride is formed and a phase of metallic uranium is released, which accumulates impurities contained in the initial solid solution in the central part of the sample. Kinetic curves for a temperature of 1900 °C are approximated by an exponential law and correspond to the nitridation of zirconium. The nitridation rate of the (Zr,U) solid solution increases with increasing uranium content. To complete the formation process of a compact nitride solid solution of (Zr,U)N of stoichiometric composition, it is necessary to increase the temperature and increase the reaction duration.
作者简介
I. Kovalev
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
Email: vankovalskij@mail.ru
G. Kochanov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
Email: vankovalskij@mail.ru
L. L'vov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
Email: vankovalskij@mail.ru
V. Zufman
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
Email: vankovalskij@mail.ru
A. Ogarkov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
Email: vankovalskij@mail.ru
D. Shornikov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia; National Nuclear Research University MIFI (Moscow Engineering Physics Institute), Moscow, Russia
Email: vankovalskij@mail.ru
B. Tarasov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia; National Nuclear Research University MIFI (Moscow Engineering Physics Institute), Moscow, Russia
Email: vankovalskij@mail.ru
A. Konovalov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
Email: vankovalskij@mail.ru
A. Shokod'ko
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences, Moscow, Russia
编辑信件的主要联系方式.
Email: vankovalskij@mail.ru
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