Skip to main content
placeholder image

Zirconolite-rich titanate ceramics for immobilisation of actinides - Waste form/HIP can interactions and chemical durability

Journal Article


Abstract


  • Zirconolite-based titanate ceramics containing U plus Th or Pu have been prepared. The final consolidation to produce a dense monolithic waste form was carried out using hot isostatic pressing (HIPing) of the calcined materials within a stainless steel can. The ceramics were characterised and tested for their overall feasibility to immobilise impure Pu or separated actinide-rich radioactive wastes. As designed, tetravalent U and Pu are mainly incorporated in a durable zirconolite phase, together with Gd or Hf added as neutron absorbers. The interaction of the waste form with the HIP can was also examined. No changes in the U valences or the U/Pu-bearing phase distributions were observed at the waste form-HIP can interface. Crown Copyright © 2009.

Publication Date


  • 2009

Citation


  • Zhang, Y., Stewart, M. W. A., Li, H., Carter, M. L., Vance, E. R., & Moricca, S. (2009). Zirconolite-rich titanate ceramics for immobilisation of actinides - Waste form/HIP can interactions and chemical durability. Journal of Nuclear Materials, 395(1-3), 69-74. doi:10.1016/j.jnucmat.2009.09.019

Scopus Eid


  • 2-s2.0-70449703224

Web Of Science Accession Number


Start Page


  • 69

End Page


  • 74

Volume


  • 395

Issue


  • 1-3

Abstract


  • Zirconolite-based titanate ceramics containing U plus Th or Pu have been prepared. The final consolidation to produce a dense monolithic waste form was carried out using hot isostatic pressing (HIPing) of the calcined materials within a stainless steel can. The ceramics were characterised and tested for their overall feasibility to immobilise impure Pu or separated actinide-rich radioactive wastes. As designed, tetravalent U and Pu are mainly incorporated in a durable zirconolite phase, together with Gd or Hf added as neutron absorbers. The interaction of the waste form with the HIP can was also examined. No changes in the U valences or the U/Pu-bearing phase distributions were observed at the waste form-HIP can interface. Crown Copyright © 2009.

Publication Date


  • 2009

Citation


  • Zhang, Y., Stewart, M. W. A., Li, H., Carter, M. L., Vance, E. R., & Moricca, S. (2009). Zirconolite-rich titanate ceramics for immobilisation of actinides - Waste form/HIP can interactions and chemical durability. Journal of Nuclear Materials, 395(1-3), 69-74. doi:10.1016/j.jnucmat.2009.09.019

Scopus Eid


  • 2-s2.0-70449703224

Web Of Science Accession Number


Start Page


  • 69

End Page


  • 74

Volume


  • 395

Issue


  • 1-3