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Pyrochlore-structured titanate ceramics for immobilisation of actinides: Hot isostatic pressing (HIPing) and stainless steel/waste form interactions

Journal Article


Abstract


  • A pyrochlore-structured titanate ceramic has been studied in respect of its overall feasibility for immobilisation of impure actinide-rich radioactive wastes through the hot isostatic pressing (HIPing) technique. The resultant waste form contains mainly pyrochlore (∼70%), rutile (∼14%) as well as perovskite (∼12%), hollandite (∼2%) and brannerite (∼1%). Optical spectroscopy confirms that uranium (used to simulate Pu) exists mainly in the stable pyrochlore-structured phase as tetravalent ions as designed. The stainless steel/waste form interactions under HIPing conditions (1280 °C/100 MPa/3 h) do not seem to change the actinide-bearing phases and therefore should have no detrimental effect on the waste form.

UOW Authors


  •   Zhang, Yingjie (external author)
  •   Li, Hui Jun.
  •   Moricca, Sam A. (external author)

Publication Date


  • 2008

Citation


  • Zhang, Y., Li, H. & Moricca, S. (2008). Pyrochlore-structured titanate ceramics for immobilisation of actinides: Hot isostatic pressing (HIPing) and stainless steel/waste form interactions. Journal of Nuclear Materials, 377 (3), 470-475.

Scopus Eid


  • 2-s2.0-45449117862

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2935

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 470

End Page


  • 475

Volume


  • 377

Issue


  • 3

Place Of Publication


  • Netherlands

Abstract


  • A pyrochlore-structured titanate ceramic has been studied in respect of its overall feasibility for immobilisation of impure actinide-rich radioactive wastes through the hot isostatic pressing (HIPing) technique. The resultant waste form contains mainly pyrochlore (∼70%), rutile (∼14%) as well as perovskite (∼12%), hollandite (∼2%) and brannerite (∼1%). Optical spectroscopy confirms that uranium (used to simulate Pu) exists mainly in the stable pyrochlore-structured phase as tetravalent ions as designed. The stainless steel/waste form interactions under HIPing conditions (1280 °C/100 MPa/3 h) do not seem to change the actinide-bearing phases and therefore should have no detrimental effect on the waste form.

UOW Authors


  •   Zhang, Yingjie (external author)
  •   Li, Hui Jun.
  •   Moricca, Sam A. (external author)

Publication Date


  • 2008

Citation


  • Zhang, Y., Li, H. & Moricca, S. (2008). Pyrochlore-structured titanate ceramics for immobilisation of actinides: Hot isostatic pressing (HIPing) and stainless steel/waste form interactions. Journal of Nuclear Materials, 377 (3), 470-475.

Scopus Eid


  • 2-s2.0-45449117862

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/2935

Has Global Citation Frequency


Number Of Pages


  • 5

Start Page


  • 470

End Page


  • 475

Volume


  • 377

Issue


  • 3

Place Of Publication


  • Netherlands