Hostname: page-component-848d4c4894-ttngx Total loading time: 0 Render date: 2024-05-14T15:40:05.028Z Has data issue: false hasContentIssue false
  • English
  • Français

Formation Rate and Compositions of the Actinide Hosts with Garnet Structure

Published online by Cambridge University Press:  17 March 2011

Tatiana S. Ioudintseva  and
Soo-Chun Chae
Tatiana S. Ioudintseva
Affiliation:
IGEM RAS, Staromonetny 35, Moscow 109017, RUSSIA
Soo-Chun Chae
Affiliation:
KIGAM, 30 Kajung-Dong, Yusung-Ku, Taejon, KOREA
Get access

Abstract

Garnet phases have been considered as a durable crystalline waste form for hosting actinide. The garnet-structure phases with stoichiometries of Ca2,5Ce0,5Zr2Fe3O12, Ca2CeZrFeFe3O12, and Ca1,5GdCe0,5ZrFeFe3O12 were synthesized through cold pressing and sintering in air and oxygen to determine the optimum parameters for the formation of actinide waste forms. Cerium (Ce) was used as an imitator of plutonium due to its similarity in oxidation state and ionic radii. Gadolinium (Gd) plays a major role as an absorber of neutrons that prevents nuclear chain reaction. It also serves as imitators of the trivalent actinides. Ce-garnet or (Ce,Gd)-garnet is chemically analogous to the garnets with plutonium and/or trivalent actinides. The results of XRD and SEM-EDS examination of the products of experiments reveal that equilibrium state was reached at the temperatures of 1300 °C and 1200 °C for 1 and 5 hours heating, respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 824: Symposium CC – Scientific Basis for Nuclear Waste Management XXVIII , 2004 , CC8.12
Copyright
Copyright © Materials Research Society 2004

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Ebbinghaus, B.B., VanKonynenburg, R.A., Ryerson, F.J. et al., Waste Management '98, CD-Rom Paper 65-04 (1998).Google Scholar
2. Vance, E.R., Begg, B.D., Day, R.A., and Ball, C.J., Mat. Res. Soc. Symp. Proc. 353, 767 (1995).Google Scholar
3. Begg, B.D., Vance, E.R., and Lumpkin, G.R., Mat. Res. Soc. Symp. Proc. 506, 79 (1998).Google Scholar
4. Laverov, N.P., Yudintsev, S.V., Lapina, M.I. et al., Mat. Res. Soc. Symp. Proc. 757, 321 (2003).Google Scholar
5. Ito, J. and Frondel, C., Amer. Miner. 52, 773 (1967).Google Scholar
6. Vlasov, V.I., Kedrovskii, O.L., and Nikiforov, A.S., IAEA Report M–294/3, 109 (1987).Google Scholar
7. Smelova, T.V., Krylova, N.V., Yudintsev, S.V., and Nikonov, B.S., Doklady of the RussianAcademy of Sciences 373, 242 (2000).Google Scholar
8. Burakov, B.E., Anderson, E.B., Knecht, D.A. et al., Mat. Res. Soc. Symp. Proc. 556, 55 (1999).Google Scholar
9. Burakov, B.E., Anderson, E.B., Zamoryanskaya, M.V., and Petrova, M.A., Mat. Res. Soc. Symp. Proc. 608, 419 (2000).Google Scholar
10. Yudintsev, S.V., Geology of Ore Deposits 45, 151 (2003).Google Scholar
11. Shabalin, B.G., Polshin, E.V., Titov, Yu.O., and Bogacheva, D.O., Miner. Journ. 25, 41 (2003).Google Scholar