Thermodynamic modeling of the phase composition of mixed uranium-plutonium mononitride under fast-neutron irradiation to burnup 80 GW·days/ton and temperature 900–1400 K

Lyubimov, D. Yu.; Androsov, A.V.; Bulatov, G. S.; Gedgovd, K. N.

doi:10.1007/s10512-013-9704-0

Cited by 10 publications

(2 citation statements)

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“…8-10, where the weight fractions of the phases with respect to total mass are shown. Comparison presented in these figures demonstrates that the results of the model considered above are close to that obtained by thermodynamic modeling in works [32,34].…”

Section: Defects and Diffusion Phenomena In Materials For Nuclear Tec...supporting

confidence: 77%

“…Total pressure in gas phase was fixed at 1 atm. Concentration of fission products, uranium and plutonium for fuel burnup of 20, 40 and 80 GWd/t were taken the same as those in [32]. Equilibrium redistribution of nitrogen between solid solution and secondary nitride phases U 2 N 3 , Ba 3 N 2 and Sr 3 N 2 calculated with the nitride version of the code MFPR [33] is illustrated in Figs.…”

Section: Defects and Diffusion Phenomena In Materials For Nuclear Tec...mentioning

confidence: 99%

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Multiscale Modeling of Uranium Mononitride: Point Defects Diffusion, Self-Diffusion, Phase Composition

Starikov

Kuksin

Smirnova

et al. 2017

DDF

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Multiscale computational approach is used to evaluate microscopic parameters for description of nitride nuclear fuel. The results of atomistic simulation and thermodynamic modeling allow to estimate diffusivity and concentrations of point defects at various stoichiometric ratios of UN1+x. The diffusivities of Xe atom were calculated in various equilibrium states. In addition, we obtained the dependence of partial nitrogen pressure on x and temperature. The results of atomistic simulation were used for modeling of nuclear fuel behavior with use of mechanistic fuel codes.

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Section: Defects and Diffusion Phenomena In Materials For Nuclear Tec...supporting

confidence: 77%

Section: Defects and Diffusion Phenomena In Materials For Nuclear Tec...mentioning

confidence: 99%