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Recrystallisation of amorphous natural brannerite through annealing: The effect of radiation damage on the chemical durability of brannerite

Journal Article


Abstract


  • An amorphous natural brannerite sample was chosen to study the annealing of the radiation damage through thermal recrystallisation, and subsequently to evaluate the effect of radiation damage on its aqueous durability. Microstructural characterisation of the natural brannerite revealed minor alteration along the rim of the crystal and within cracks. The formation of UO2 particles and soluble Pb-Ca-rich aluminosilicate glass is responsible for the higher U and Pb releases from the recrystallised brannerite. In general, natural brannerite has been shown to be resistant to dissolution over geological time, therefore minor brannerite inclusions in ceramic formulations for immobilisation of actinide-rich radioactive wastes should not have a detrimental effect on the long-term chemical durability of the wasteforms. © 2006 Elsevier B.V. All rights reserved.

Publication Date


  • 2006

Citation


  • Zhang, Y., Lumpkin, G. R., Li, H., Blackford, M. G., Colella, M., Carter, M. L., & Vance, E. R. (2006). Recrystallisation of amorphous natural brannerite through annealing: The effect of radiation damage on the chemical durability of brannerite. Journal of Nuclear Materials, 350(3), 293-300. doi:10.1016/j.jnucmat.2006.01.012

Scopus Eid


  • 2-s2.0-33646025821

Web Of Science Accession Number


Start Page


  • 293

End Page


  • 300

Volume


  • 350

Issue


  • 3

Abstract


  • An amorphous natural brannerite sample was chosen to study the annealing of the radiation damage through thermal recrystallisation, and subsequently to evaluate the effect of radiation damage on its aqueous durability. Microstructural characterisation of the natural brannerite revealed minor alteration along the rim of the crystal and within cracks. The formation of UO2 particles and soluble Pb-Ca-rich aluminosilicate glass is responsible for the higher U and Pb releases from the recrystallised brannerite. In general, natural brannerite has been shown to be resistant to dissolution over geological time, therefore minor brannerite inclusions in ceramic formulations for immobilisation of actinide-rich radioactive wastes should not have a detrimental effect on the long-term chemical durability of the wasteforms. © 2006 Elsevier B.V. All rights reserved.

Publication Date


  • 2006

Citation


  • Zhang, Y., Lumpkin, G. R., Li, H., Blackford, M. G., Colella, M., Carter, M. L., & Vance, E. R. (2006). Recrystallisation of amorphous natural brannerite through annealing: The effect of radiation damage on the chemical durability of brannerite. Journal of Nuclear Materials, 350(3), 293-300. doi:10.1016/j.jnucmat.2006.01.012

Scopus Eid


  • 2-s2.0-33646025821

Web Of Science Accession Number


Start Page


  • 293

End Page


  • 300

Volume


  • 350

Issue


  • 3