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Karpeeva, A., Timoshin, I., & Mikheev, E. (2018). Parameters Influencing Thermal Stability of U-Gd Nuclear Fuel. KnE Materials Science, 4(1), 85–90. https://doi.org/10.18502/kms.v4i1.2130

https://doi.org/10.18502/kms.v4i1.2130

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authors

  • A Karpeeva
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  • I Timoshin
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  • E Mikheev
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Published Date

  • May 6, 2018

Parameters Influencing Thermal Stability of U-Gd Nuclear Fuel

KnE Materials Science / 15th International School-Conference "New Materials – Materials of Innovative Energy" (MIE) / Pages 85–90

Abstract

Relations between the processes of growth of intermetallic inclusions and their surface segregation in binary and ternary alloys of zirconium are presented. An increased surface concentration of iron atoms was observed, and is associated with intermetallic inclusion growth with increased annealing temperature of the deformed alloys. Modelling the asymmetric growth of these intermetallic inclusions, leading to their migration, have enabled the determination of the diffusion coefficient of iron in these intermetallics.


Keywords: Thermal stability, resintering, U-Gd fuel, fuel pellets, pore-former, sintering temperature.

References
[1] V.Baranov, R.Kuzmin, I.Timoshin, etc. Several sintering parameters of U-Gd oxide fuel pellets. – Atomic Energy, 2012, vol. 112, issue 4, p. 245-248.


[2] V.Baranov, R.Kuzmin, A.Tenishev, etc. Sintering characteristics of oxide nuclear fuel pellets. – Atomic Energy, 2011, vol. 110, issue 3, p. 146-149.


[3] M. Durazzo, А.М. Saliba-Silva, and etc. Remarks on the sintering behavior of UO2- Gd2O3 fuel. –Journal of Nuclear Materials 405, 2010, p.203-205.


[4] M. Durazzo, F.B.V. Oliveira, and etc. Phase studies in the UO2-Gd2O3 system. –Journal of Nuclear Materials 400, 2010, p.183-188.


[5] 323.000.302-2015 Measurement procedure titled “Uranium dioxide fuel pellets with Gadolinia mass concentration from 3.0 to 10.5%. Determining thermal stability of pellet geometry and density (resintering)”. JSC VNIINM, 2015.