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Reduction of Gd6UO12 for the Synthesis of Gd6UO11

Published online by Cambridge University Press:  12 February 2013

Darío Pieck
Affiliation:
CEA, DEN, DEC, SESC – Laboratoire des Lois de Comportement des Combustibles.
Lionel Desgranges*
Affiliation:
CEA, DEN, DEC, SESC – Laboratoire des Lois de Comportement des Combustibles.
Yves Pontillon
Affiliation:
CEA, DEN, DEC, SA3C – Laboratoire d’Etudes de la Microstructure des Combustibles Irradiés.
Pierre Matheron
Affiliation:
CEA, DEN, DEC, SPUA – Laboratoire Combustible Uranium.
*
*Email address: lionel.desgranges@cea.fr, telephone: +33442253159, fax: +33442253285, postal address: CEA, DEN, DEC, Département d’Etudes des Combustibles, SESC/LLCC, bât. 352, F-13108 Saint Paul lez Durance, France.
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Abstract

In the present work, we focus on δ-Gd6UO12 phase and its stability under reducing conditions. This later point is interesting regarding reducing environment that could exist in some nuclear storage sites and that could possibly degrade δ–compounds. A polycrystalline δ-Gd6UO12 sample was prepared by sintering cubic-Gd2O3 and UO2 mixed powders under an air atmosphere. The resulting pellets were then characterized and reduced by heat treatment under an Ar with H2 5% atmosphere. XRD analysis of the sample after reduction did not confirm the reduction into Gd6UO11 but a decomposition of the δ-compound. Preliminary characterizations of these decomposition products are presented.

Type
Articles
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

Weber, W.J., Ewing, R.C., Catlow, C.R.A., de la Rubia, T.D., Hobbs, L.W., Kinoshita, C., Matzke, H., Motta, A.T., Nastasi, M., Salje, E.K.H., Vance, E.R., Zinkle, S.J., J. Mater. Res. 13 (1998) 14341484.10.1557/JMR.1998.0205CrossRefGoogle Scholar
Tang, M., Holliday, K.S., Jiang, C., Valdez, J.A., Uberuaga, B.P., Dickerson, P.O., Dickerson, R.M., Wang, Y., Czerwinski, K.R., Sickafus, K.E., Journal of Solid State Chemistry 183 (2010) 844848.10.1016/j.jssc.2010.01.020CrossRefGoogle Scholar
Tang, M., Holliday, K.S., Valdez, J.A., Uberuaga, B.P., Dickerson, P.O., Dickerson, R.M., Wang, Y., Czerwinski, K.R., Sickafus, K.E., Journal of Nuclear Materials 407 (2010) 4447.10.1016/j.jnucmat.2010.07.007CrossRefGoogle Scholar
Song, K.W., Sik Kim, K., Ho Yang, J., Won Kang, K., Ho Jung, Y., Journal of Nuclear Materials 288 (2001) 9299.10.1016/S0022-3115(00)00721-2CrossRefGoogle Scholar
Jena, H., Asuvathraman, R., Govindan Kutty, K.V., Journal of Nuclear Materials 280 (2000) 312317.10.1016/S0022-3115(00)00055-6CrossRefGoogle Scholar
Hinatsu, Y., Masaki, N., Fujino, T., Journal of Solid State Chemistry 73 (1988) 567571.10.1016/0022-4596(88)90146-6CrossRefGoogle Scholar
Tang, M., Holliday, K.S., Valdez, J.A., Journal of Nuclear Materials (2009) 497499.10.1016/j.jnucmat.2009.02.001CrossRefGoogle Scholar
Jena, H., Asuvathraman, R., Krishnaiah, M.V., Kutty, K.V.G., Powder Diffr. 16 (2001) 220.10.1154/1.1383080CrossRefGoogle Scholar
Bartram, S.F., Inorg. Chem. 5 (1966) 749754.10.1021/ic50039a012CrossRefGoogle Scholar
Aitken, E.A., Bartram, S.F., Juenke, E.F., Inorganic Chemistry 3 (1964) 949954.10.1021/ic50017a005CrossRefGoogle Scholar
Sahu, M., Krishnan, K., Saxena, M.K., Ramakumar, K.L., Journal of Alloys and Compounds 482 (2009) 141146.10.1016/j.jallcom.2009.03.104CrossRefGoogle Scholar
Zhang, F.X., Lang, M., Wang, J.W., Becker, U., Ewing, R.C., Phys. Rev. B 78 (2008) 064114.10.1103/PhysRevB.78.064114CrossRefGoogle Scholar