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Zirconolite-Rich Titanate Ceramics for High-Level Actinide Wastes

Published online by Cambridge University Press:  25 February 2011

Eric R. Vance ,
P.J. Angel ,
B.D. Begg  and
R.A. Day
Eric R. Vance
Affiliation:
Advanced Materials Program, Ansto, Private Mail Bag 1, Menai, N.S.W., 2234, Australia
P.J. Angel
Affiliation:
Advanced Materials Program, Ansto, Private Mail Bag 1, Menai, N.S.W., 2234, Australia
B.D. Begg
Affiliation:
Advanced Materials Program, Ansto, Private Mail Bag 1, Menai, N.S.W., 2234, Australia
R.A. Day
Affiliation:
Advanced Materials Program, Ansto, Private Mail Bag 1, Menai, N.S.W., 2234, Australia
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Abstract

New diffraction and microstructural data on the incorporation of rare earths, Np and Pu in nominally single-phase zirconolite (CaZrTi2O7) are presented. Such data are vital for the crystal-chemical design of zirconolite-rich titanate ceramics of the Synroc family, for the immobilization of up to 30 wt% of actinide wastes from advanced reprocessing/partitioning schemes. Some trial zirconolite-rich ceramics were made with U and Nd simulating tetravalent and trivalent actinides respectively. Some preliminary results to examine chemical flexibility with regards to variations in waste/precursor are given, for different actinide waste compositions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 333: Symposium V – Scientific Basis for Nuclear Waste Management XVII , 1993 , 293
Copyright
Copyright © Materials Research Society 1994

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References

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