Abstract
Zirconate and titanate pyrochlores were subjected to 1 MeV of Kr+ irradiation. Pyrochlores in the Gd2(ZrxTi1-x)2O7 system (x = 0, 0.25, 0.5, 0.75, 1) showed a systematic change in the susceptibility to radiation-induced amorphization with increasing Zr content. Gd2Ti2O7 amorphized at relatively low dose (0.2 displacement per atom at room temperature), and the critical temperature for amorphization was 1100 K. With increasing zirconium content, the pyrochlores became increasingly radiation resistant, as demonstrated by the increasing dose and decreasing critical temperature for amorphization. Pyrochlores highly-enriched in Zr (Gd2Zr2O7, Gd2Zr1.8Mg0.2O6.8, Gd1.9Sr0.1Zr1.9Mg0.1O6.85, and Gd1.9Sr0.1Zr1.8Mg0.2O6.75) could not be amorphized, even at temperature as low as 25 K.
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K.K.S. Pillay, Radwaste Jan, 60 (1996).
G. Taubes, Science 263, 629 (1994).
W. Stoll, MRS Bull. 23(3), 6 (1998).
V.M. Oversby, C.C. McPheeters, C. Degueldre, and J.M. Paratte, J. Nucl. Mater. 245, 17 (1997).
Panel on Reactor-Related Options for the Disposition of Excess Weapons Plutonium, National Research Council, Management and Disposition of Excess Weapons Plutonium: Reactor-Related Options (National Academy Press, Washington, D.C., 1995).
Record of Decision for the Storage and Disposition of Weapons-Usable Fissile Materials Final Programmatic Environmental Impact Statement, Jan. 14, 1997 (U.S. Department of Energy, Washington, DC, 1997).
Hj. Matzke and J. van Geel, in Disposal of Weapon Plutonium Approaches and Prospects, NATO ASI series, edited by E.R. Merz and C.E. Walter (Kluwer Academic Publishers, Dordrecht, 1996), p. 93.
R.C. Ewing, W.J. Weber, and W. Lutze, in Disposal of Weapon Plutonium, edited by E.R. Merz and C.E. Walter (Kluwer Academic Publishers, Dordrecht, The Netherlands, 1996), p. 65.
R.C. Ewing, Proc. Natl. Acad. Sci. USA 96, 3432 (1999).
A.E. Ringwood, S.E. Kesson, N.G. Ware, W. Hibberson, and A. Major, Nature 278, 219 (1979).
A. Jostsons, E.R. Vance, R.A. Day, K.P. Hart, and M.W.A. Stewart, in Proceedings of International Topical Meeting on Nuclear and Hazardous Waste Management, Spectrum, 2032 (1996).
I. W. Donald, B. L. Metcalfe and R.N.J. Taylor, J. Mater. Sci. 32, 5851 (1997)
R.C. Ewing, W.J. Weber, and F.W. Clinard, Jr., Prog. Nucl. Energy 29, 63 (1995).
W.J. Weber, R.C. Ewing, C.R.A. Catlow, T. Diaz de la Rubia, L.W. Hobbs, C. Kinoshita, Hj. Matzke, A.T. Motta, M. Nastasi, E.K.H. Salje, E.R. Vance, and S.J. Zinkle, J. Mater. Res. 13, 1434 (1998).
M.A. Subramanian, G. Aravamudan, and G.V. Subba Rao, Prog. Solid State Chem. 15, 55 (1983).
B.C. Chakoumakos and R.C. Ewing, in Scientific Basis for Nuclear Waste Management VIII, edited by C.M. Jantzen, J.A. Stone, and R.C. Ewing (Mater. Res. Soc. Symp. Proc. 44, Pittsburgh, PA, 1985), pp. 641–646.
S.S. Shoup, C.E. Bamberger, and R.G. Haire, J. Am. Ceram. Soc. 79, 1489 (1996).
F.W. Clinard, Jr., D.E. Peterson, D.L. Rohr, and L.W. Hobbs, J. Nucl. Mater. 126, 245 (1989).
T. Muromura and Y. Hinatsu, J. Nucl. Mater. 151, 55 (1987).
G.R. Lumpkin and R.C. Ewing, Phys. Chem. Min. 16, 2 (1988).
J.W. Wald and P. Offerman, in Scientific Basis for Nuclear Waste Management V, edited by W. Lutze (Mater. Res. Soc. Symp. Proc. 11, Pittsburgh, PA, 1982), pp. 369–378.
W.J. Weber, J.W. Wald, and Hj. Matzke, Mater. Lett. 3, 173 (1985).
W.J. Weber, J.W. Wald, and Hj. Matzke, J. Nucl. Mater. 138, 196 (1986).
W.J. Weber, N.J. Hess, and G.D. Maupin, Nucl. Instrum. Meth. B65, 102 (1992).
W.J. Weber and N.J. Hess, Nucl. Instrum. Meth. B80/81, 1245 (1993).
S.X. Wang, L.M. Wang, R.C. Ewing, G.S. Was, and G.R. Lumpkin, Nucl. Instrum. Meth. B148, 704 (1999).
B.D. Begg, W.J. Weber, R. Devanathan, J.P. Icenhower, S. Thevuthasan, and B.P. McGrail, in Waste Management Science and Technology in the Ceramic and Nuclear Industries, edited by G.L. Smith, G.T. Chandler, B. Mobasher (The American Ceramic Society, Westerville, OH, 1999, in press).
K.L. Smith, N.J. Zaluzec, and G.R. Lumpkin, J. Nucl. Mater. 250, 36 (1997).
P.K. Moon and H.L. Tuller, in Solid State Ionics, edited by G. Nasri, R.A. Huggins, and D.F. Shriver (Mater. Res. Soc. Symp. Proc. 135, Pittsburgh, PA, 1989), pp. 149–163.
R.C. Ewing and L.M. Wang, Nucl. Instrum. Meth. B65, 319 (1992).
A. Meldrum, L.A. Boatner, S.J. Zinkle, S.X. Wang, L.M. Wang, and R.C. Ewing, Can. Miner. 37, 207 (1999).
I.J. McColm, Ceramic Science for Materials Technologists (Chapman and Hall, New York, 1983), p. 280.
N. Yu, K.E. Sickafus, P. Kodali, and M. Nastasi, J. Nucl. Mater. 244, 266 (1997).
A.E. Ringwood, S.E. Kesson, K.D. Reeve, D.M. Levins, and E.J. Ramm, in Radioactive Waste Forms for the Future, edited by W. Lutz and R.C. Ewing (North-Holland, New York, 1988), pp. 233–334.
K.P. Hart, E.R. Vance, M.W.A. Stewart, J. Weir, M.L. Carter, M. Hambley, A. Brownscombe, R.A. Day, S. Leung, C.J. Ball, B. Ebbinghaus, L. Gray, and T. Kan, in Scientific Basis for Nuclear Waste Management XXI, edited by I.G. McKinley and C. McCombie (Mater. Res. Soc. Symp. Proc. 506, Warrendale, PA, 1998), pp. 161–168.
I. Hayakawa and H. Kamizono, J. Mater. Sci. 28, 513 (1993).
N.C. Dutta, Radiochim. Acta 79, 25 (1997).
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Wang, S.X., Begg, B.D., Wang, L.M. et al. Radiation stability of gadolinium zirconate: A waste form for plutonium disposition. Journal of Materials Research 14, 4470–4473 (1999). https://doi.org/10.1557/JMR.1999.0606
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DOI: https://doi.org/10.1557/JMR.1999.0606