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Quantitative X-Ray Diffraction Analysis of Titanate Waste Forms and its Application to Damage Ingrowth

Published online by Cambridge University Press:  01 January 1992

T.J. White  and
H. Mitamura
T.J. White
Affiliation:
Electron Microscope Centre, The University of Queensland, Brisbane, Australia, 4067
H. Mitamura
Affiliation:
Department of Environmental Safety Research, Japan Atomic Energy Research Institute, Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan
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Abstract

Quantitative powder X-ray diffraction was used to analyse the phase assemblages of titanate nuclear waste ceramics doped with 244Cm and accumulating a-decay doses up to 1.24 × 1018 alpha-decay-events g−1. Among the Cm-bearing phases, perovskite is more susceptible to damage than zirconolite. Phases devoid of curium (hollandite and freudenbergite) experience a flux of ionizing radiation, and may also undergo radiation-induced structural degradation. The analysis demonstrated that at a dose of 1.24 × 1018 alpha-decay-events g−1 approximately 20 wt% of the waste phases remain aperiodic after annealing for 2 hours at 800°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 294: Symposium V – Scientific Basis for Nuclear Waste Management XVI , 1992 , 109
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

1. Klug, H.P. and Alexander, L.E., X-ray Diffraction Procedures for Polycrystalline and Amorphous Materials (Wiley, New York, 1974).Google Scholar
2. Hill, R.J. and Howard, C.J., J. Appl. Crystallogr. 20, 467 (1987).Google Scholar
3. Rietveld, H.M., J. Appl. Crystallogr. 2, 65 (1969).Google Scholar
4. Taylor, J.C., Powder Diffraction 6, 2 (1991).Google Scholar
5. White, T.J. and Mitamura, H., J. Am. Ceram. Soc., in preparation (1992).Google Scholar
6. Mitamura, H. et al. , J. Am. Ceram. Soc. 73, 3433 (1992).Google Scholar
7. Fielding, P.E. and White, T.J., J. Mater. Res 2, 387 (1987).Google Scholar