Hostname: page-component-848d4c4894-r5zm4 Total loading time: 0 Render date: 2024-06-24T21:17:56.935Z Has data issue: false hasContentIssue false
  • English
  • Français

The Effects of Uranium on the Structure of Iron Phosphate Glasses

Published online by Cambridge University Press:  10 February 2011

Yaspal Badyal ,
Mevlut Karabulut ,
Kanishka Marasinghe ,
Marie-Louise Saboungi ,
Dean Haeffner ,
Sarvjit Shastri ,
D. E. Day  and
C. S. Ray
Yaspal Badyal
Affiliation:
Argonne National Laboratory, Argonne, IL 60439
Mevlut Karabulut
Affiliation:
Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, MO 65409
Kanishka Marasinghe
Affiliation:
Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, MO 65409
Marie-Louise Saboungi
Affiliation:
Argonne National Laboratory, Argonne, IL 60439
Dean Haeffner
Affiliation:
Argonne National Laboratory, Argonne, IL 60439
Sarvjit Shastri
Affiliation:
Argonne National Laboratory, Argonne, IL 60439
D. E. Day
Affiliation:
Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, MO 65409
C. S. Ray
Affiliation:
Graduate Center for Materials Research, University of Missouri-Rolla, Rolla, MO 65409
Get access

Abstract

Because of their high chemical durability and waste loading capacity, iron phosphate glasses are a natural candidate for a nuclear waste disposal medium. We have studied the effects of uranium on the structure of iron phosphate glasses with both neutron and high-energy x-raydiffraction. The results of neutron scattering, which is mostly sensitive to pair correlations involving light atoms i.e. O-O, Fe-O and P-O, indicate the main structural features of the base glass are largely unaffected by the addition of UO2. The nearest-neighborbour P-O, Fe-O and O- O peaks remain at the same position in real space and their intensities scale approximately with concentration. These findings are consistent with earlier results using Raman scattering and EXAFS on the Fe-K edge, where in both cases the spectra remain similar to the base glass. The results of high-energy x-ray scattering, which is sensitive to correlations involving the heavier atoms and thus complements the neutron measurements, are also consistent with the overall picture of uranium occupying interstitial sites in the relatively undisturbed base glass structure. Combining the neutron and x-ray data for a 10 mol% UO2 glass suggests the intriguing possibility of a U6+ uranyl ion configuration although further work is needed to establish the precise local structure and valence state of uranium in these glasses.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 297
Copyright
Copyright © Materials Research Society 1999

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1] Sales, B. C. & Boatner, L. A., Science, 22, 45 (1984).Google Scholar
[2] Sales, B. C. & Boatner, L. A., J. Non-Cryst. Solids, 71, 103 (1985).Google Scholar
[3] Sales, B. C. & Boatner, L. A., J. Non-Cryst. Solids, 79, 83 (1986).Google Scholar
[4] Chick, L. A., Bunel, L. R., Strachen, D. M., Kissinger, H. E. & Hodges, N., “Evaluation of lead-iron phosphate glass as a high-level waste form”, Pacific Northwest National Lab., Hanford WA.Google Scholar
[5] Greaves, G. N., Gurman, S. J., Gladden, L. F., Spence, C. A., Cox, P., Sales, B. C., boatner, L. A. & Jenkins, R. N., Philos. Mag. B, 58, 217 (1988).Google Scholar
[6] Marasinghe, G. K., Karabulut, M., Ray, C. S., Day, D. E., Shumsky, M. G., Yellon, W. B., Booth, C. H., Allen, P. G. & Shuh, D. K., J. Non. Cryst. Solids, 222, 144–152 (1997).Google Scholar
[7] Ijjaali, M., Venturini, G., Geradin, R., Malaman, B., Gleitzer, C., Eur. J. Solid State Inorg. Chem., 28, 983 (1991).Google Scholar
[8] Marasinghe, G. K. et al, Ceramic Transactions, vol 93, expected publication April 1999.Google Scholar
[9] Booth, C. H., Allen, P. G., Butcher, J. J., Edelstein, N. M., Shuh, D. K., Marasinghe, G. K., Karabulut, M., Ray, C. S. & Day, D. E., submitted to J. Mat. Res. August 1998.Google Scholar
[10] Badyal, Y. S., Saboungi, M.-L., Price, D. L., Haeffner, D. R. & Shastri, S., Europhys. Lett., 39(1), 19 (1997).Google Scholar
[11] Ellison, A. J. G., Crawford, R. K., Montague, D. G., Volin, K. J. & Price, D. L., J. Neut. Research, 1(4), 61–70 (1993).Google Scholar
[12] Soper, A. K., Howells, W. S. & Hannon, A. C., ATLAS – analysis of time-of-flight diffraction data from liquid and amorphous samples (report RAL-89-046, Rutherford-Appleton Lab., 1989).Google Scholar
[13] Susman, S., Volin, K. J., Montague, D. G. & Price, D. L., J. Non. Cryst. Solids, 125, 168 (1990).Google Scholar
[14] Knapp, G. S., Veal, B. W., Lam, D. J.,Paulikas, A. P. & Pan, H. K.,Materials Letters, 2(4),253 (1984).Google Scholar