A range of compositions of high-zirconia borosilicate glasses were formulated and their structures investigated by a combination of techniques. These compositions have potential applications for high-level nuclear waste storage in combination with advanced reprocessing methods. Raman and Zr EXAFS data were collected for a series of glasses spanning a range of zirconia concentrations. The Raman spectra indicate that Zr acts as a silicate network modifier, where the silicate tetrahedral network depolymerizes as the zirconia content increases. Zr EXAFS analysis indicates that Zr is found in octahedral sites, and to a minor extent, sevencoordinated sites. As the zirconia content increases, the fraction of seven-coordinated Zr-sites increases; this may be the cause of ZrO2 baddeleyite crystallization that was observed in some Zr-rich glasses investigated.
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K. S. Matlack, I. S. Muller, H. Hojaji, I. L. Pegg, C. Ahearn, C. R. Scales, High Temperature Melter Tests for Vitrification of BNFL High-Level Nuclear Wastes, in Symposium QQ: Scientific Basis for Nuclear Waste Management XXII, Paper 9.55, Materials Research Society, Fall Meeting (1998).
D. K. Smith, H. W. Newkirk, Acta Cryst., 18, p. 983 (1965).
K. Robinson, G. V. Gibbs, P. H. Ribbe, Am. Mineral., 56, p. 783 (1971).
S. Ghose, C. Wan, Am. Mineral., 63, p. 304 (1978).
S. V. Raman, J. Mat. Res., 13, p. 8 (1998).
C. E. Bouldin, R. A. Forman, M. I. Bell, Rev. Sci. Instruments, 58, p. 1891 (1987).
D. E. Sayers, B. A. Bunker: in X-ray Absorption Principles, Applications, Techniques of EXAFS, SEXAFS, and XANES, ed. D. C. Kroningsberger, R. Prins (Wiley, New York, 1988), Ch. 6, p. 211.
S. I. Zabinsky, J. J. Rehr, A. Ankudinov, R. C. Albers, M. J. Eller, Phys. Rev. B, 52, p. 2995 (1995).
M. Newville, B. Ravel, D. Haskel, E. A. Stem, Y. Yacoby, Phyica B, 208–209, p. 154 (1995).
D. A. McKeown, F. L. Galeener, G. E. Brown Jr., J. Non-Crystalline Solids, 68, p. 361 (1984).
F. L. Galeener, P. N. Sen, Phys. Rev., B 17, p. 1928 (1978).
S. A. Brawer, W. B. White, J. Non-Crystalline Solids, 23, p. 261 (1977).
F. Farges, C. W. Ponader, G. E. Brown Jr., Geochim. Cosmochim. Acta, 55, p. 1563 (1991).
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McKeown, D.A., Muller, I.S., Buechele, A.C. et al. Formulation, Testing, and Structural Characterization of High-Zirconium High-Level Waste Glasses. MRS Online Proceedings Library 556, 305 (1998). https://doi.org/10.1557/PROC-556-305