Hyperfine interaction and phase transitions in oxide films of zirconium alloys . Hyperfine Interactions Volume 221, Issue 1-3, 2013, Pages 137-144

14 сентября 2018
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Вид публикации Статья
Контактные данные автора публикации Filippov, V.P. , Kargin, N.I., Alferov, P.V. National Research Nuclear University MEPhI
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Аннотация

Using Mössbauer spectroscopy the phase transformation of the intermetallic compound Zr2Fe in zirconium alloys due to the interaction with oxygen from the air is shown. The intermetallic compound Zr2Fe transforms to Zr3Fe and to a solid solution of oxygen atoms in Zr3Fe. The influence of oxidation in oxygen atmosphere (T = 500 °C, p = 105 Pa) and the corrosion in an autoclave (T = 500 °C, p = 10 MPa) are investigated for some alloys containing Fe, Cu, Nb. It is shown that the formation of particles of α-Fe, α-Fe2O3, Fe3O4 and a solid solution of iron in ZrO2 occur in oxide films of zirconium alloys. A non-uniform distribution of some phases in oxide films is established. A large quantity of α-Fe2O3 and Fe3 in solid solution are located in the vicinity of the interface oxide-corrosion environment. As to α-Fe its particles are more distributed inside of the oxide films, while the concentration of metallic iron particles increases with the depth of the oxide film. © 2012 Springer Science Business Media Dordrecht.



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Author keywords

Corrosion; Mossbauer effect; Zirconium alloys
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