Modeling of Phase Separation in Uranium Mononitride
Abstract
Semiempirical modeling of uranium mononitride decomposition was carried out using the laws of the chemical kinetics of heterogeneous reactions. All calculations based on results received from thermal stability tests of UN at high temperatures. Kinetic curves of UN decomposition products correspond to the self-accelerating decomposition, which follows the induction period. The experimental data of uranium nitride mass loss in the investigated range of parameters are well described obtained results. The modeling can be used to estimate the phase composition of uranium mononitride during high-temperature tests in an atmosphere that does not contain nitrogen.
References
[1] Chevalier P.Y., Fischer E., Cheynet B., Journal of Nuclear Materials (2000) 280 136-150
[2] Jolkkonen M., Streit M., Wallenius J. Journal of Nuclear Science and Technology (2004) 41:4, 457-465
[3] Astafyev V.A., Baranov V.G., Tenishev A.V., Kuzmin R.S., Mikhalchik V.V., Pokrovskiy S.A., Taubin M.L., Solntseva E.S. Annals of Nuclear Energy (2016) 87 784–792
[4] Mikhalchik V.V., Tenishev A.V., Baranov V.G. and Kuzmin R.S. Advanced Materials Research (2014) Vol. 1040 pp 47-52
[5] Semiokhin I.A., Strakhov B.V. and Osipov A.I. Book Kinetics of chemical reactions ISBN 5-211-03051-6 351 p.