Abstract
New diffraction and microstructural data on the incorporation of rare earths, Np and Pu in nominally single-phase zirconolite (CaZrTi207) arepresented. 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. Somepreliminary results to examine chemical flexibility with regards to variations in waste/precursor are given, for different actinide waste compositions.
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Vance, E.R., Angel, P.J., Begg, B.D. et al. Zirconolite-Rich Titanate Ceramics for High-Level Actinide Wastes. MRS Online Proceedings Library 333, 293–298 (1993). https://doi.org/10.1557/PROC-333-293
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DOI: https://doi.org/10.1557/PROC-333-293