Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-14T17:36:50.970Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of Synthesis Conditions and Actinide Contents on Phase Composition of Actinide Bearing Ceramics

Published online by Cambridge University Press:  01 February 2011

A. G. Ptashkin ,
S. V. Stefanovsky ,
S. V. Yudintsev  and
S. A. Perevalov
A. G. Ptashkin
Affiliation:
SIA Radon, 7th Rostovskii per., 2/14, Moscow 119121, RUSSIA
S. V. Stefanovsky
Affiliation:
SIA Radon, 7th Rostovskii per., 2/14, Moscow 119121, RUSSIA
S. V. Yudintsev
Affiliation:
Institute of Geology of Ore Deposits, Staromonetnii per. 35, Moscow 109017, RUSSIA
S. A. Perevalov
Affiliation:
Vernadsky Institute of Geochemistry and Analytical Chemistry, Kosygin st., 19, Moscow, RUSSIA
Get access

Abstract

Pu-bearing zirconolite and pyrochlore based ceramics were prepared by melting under oxidizing and reducing conditions at 1550 °C. 239Pu content in the samples ranged between ∼10 and ∼50 wt.%. Phase composition of the ceramics and Pu partitioning were studied using X-ray diffraction (XRD) and scanning electron microscopy with energy dispersive system (SEM/EDS). Major phases in the samples were found to be the target zirconolite and pyrochlore as well as a cubic fluorite structure oxide. Normally the Pu content in the Pu host phases was 10–12 wt.%. This corresponds to the Pu content recommended for matrices for immobilization of excess weapons plutonium. At higher Pu content (up to 50 wt.%) additional phases, such as a PuO2-based cubic fluorite-structured solid solution, perovskite, and rutile were found.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 807: Symposium Scientific Basis for Nuclear Waste Management XXVII , 2003 , 345
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

REFERENCES

1. Review of Excess Weapons Plutonium Disposition LLNL Contract Work in Russia, Jardine, L.J. and Borisov, G.B. (eds), UCRL-ID-149341, 2002.Google Scholar
2. Ebbinghaus, B.B., VanKonynenburg, R.A., Ryerson, F.J. et al., Waste Management ′98. Proc. Int. Symp.. Tucson, AZ, March 1–5, 1998. CD-ROM. Paper #65–04.Google Scholar
3. Buck, E.C., Ebbinghaus, B., Bakel, A.J., Bates, K.K., Mat. Res. Soc. Symp. Proc. 465, 1259 (1997).Google Scholar
4. Weber, W.J., Ewing, R.C., Mat. Res. Soc. Symp. Proc. 713, 443 (2002).Google Scholar
5. Brummond, W., Armantrout, G., in Waste Management '98. Proc. Int. Symp.. Tucson, AZ, Match 1–5, 1998. CD-ROM. Paper 65–05.Google Scholar
6. Jostsons, A., Vance, E.R., Day, R.A., et. al., SPECRTUM '96. Proc. Int. Conf. Seattle, WA, 1996, pp. 2032–2039.Google Scholar
7. Smelova, T.V., Krylova, N.V., Shestoperov, I.N., Mat. Res. Soc. Symp. Proc. 465, 425 (1997).Google Scholar
8. Sobolev, I.A., Stefanovsky, S.V., Ioudintsev, S.V., et al., Mat. Res. Soc. Symp. Proc. 465, 363 (1997).Google Scholar
9. Knyazev, O.A., Stefanovsky, S.V., Ioudintsev, S.V., et al., Mat. Res. Soc. Symp. Proc. 465, 401 (1997).Google Scholar
10. Stefanovsky, S.V., Ioudintsev, S.V., Nikonov, B.S., et al., Mat. Res. Soc. Symp. Proc. 506, 269 (1998).Google Scholar
11. Advocat, T., Leturcq, G., Lacombe, J., et al., Mat. Res. Soc. Symp. Proc. 465, 355 (1997).Google Scholar
12. Petitjean, V., Fillet, C., Boen, R., et al., Waste Management '02. Proc. Int. Symp. Tucson, AZ, February 24–28, 2002. CD-ROM.Google Scholar
13. Matyunin, Yu.I., Alexeev, O.A., Ananina, T.N., in: GLOBAL '2001. Proc. Int. Conf. Paris, France, 2001. CD-ROM.Google Scholar
14. Jostsons, A., Vance, L., Ebbinghaus, B., GLOBAL '99 “Nuclear Technology – Bridging the Millenia”. Jackson Hole, 1999. CD-ROM.Google Scholar
15. Stefanovsky, S.V., Cherniavskaya, N.E., Ochkin, A.V., Yudintsev, S.V., 14th Radiochem. Conf. Marianske Lazne, Czech Rep., 2002, p. 302.Google Scholar