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Investigation of Ce incorporation in zirconolite glass-ceramics for UK plutonium disposition

  • Stephanie M. Thornber (a1), Martin C. Stennett (a1) and Neil C. Hyatt (a1)

Abstract

Cerium incorporation in zirconolite glass-ceramic systems, consolidated by hot isostatic pressing, was investigated. Samples were formulated to target Ce incorporation on the Ca and / or Zr sites. Results show successful incorporation of Ce into the ceramic phase although complete waste digestion was not achieved. The formation of a Ce-bearing perovskite phase when targeting Zr substitution, was associated with reduction of Ce4+ to Ce3+. This study is part of preliminary work towards fabricating Pu-bearing glass-ceramic HIP samples.

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