Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-29T09:19:04.969Z Has data issue: false hasContentIssue false
  • English
  • Français

Thermochemical Models for Nuclear Waste Glass Subsystems – MgO-CaO and MgO-Al2O3

Published online by Cambridge University Press:  10 February 2011

T. M. Besmann ,
K. E. Spear  and
E. C. Beahm
T. M. Besmann
Affiliation:
Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, TN 37831-6063
K. E. Spear
Affiliation:
Materials Science and Engineering Department, Pennsylvania State University, 118 Steidle Building, University Park, PA 16802-5005
E. C. Beahm
Affiliation:
Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, TN 37831-6063
Get access

Abstract

A relatively simple model, the associate species model, is being applied to nuclear waste glass compositions in order to accurately predict behavior and thermodynamic activities in the material. In the model, the glass is treated as a supercooled liquid, with the liquid species allowed to exist below their melting point. The approach requires an initial assembly of binary and ternary oxide liquid solution data that sufficiently reproduce the equilibrium phase diagrams. Two binary oxide subsystems, MgO-CaO and MgO-Al2O3, have been modeled and results compared to published phase diagrams. Computed activities of the glass constituent species are plotted as a function of composition at 1200°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 383
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. Ellison, A.J.G. and Navrotsky, A. in Scientfic Basis for Nuclear Waste Management XIII edited by Oversby, V.M. and Brown, P.W. (Mater. Res. Soc. Proc. 176, Pittsburgh, PA 1990), pp. 193–207.Google Scholar
2. Hastie, J.W. and Bonnell, D.W., High Temp. Sci. 19, 275 (1985).Google Scholar
3. Hastie, J.W., Pure and Appl. Chem. 56, 1583 (1984).Google Scholar
4. Hastie, J.W., Plante, E.R., and Bonnell, D.W., Vaporization of Simulated Nuclear Waste Glass, NBSIR 83-2731, NIST, Gaithersburg, MD (1983).Google Scholar
5. Bonnell, D.W. and Hastie, J.W., High Temp. Sci. 26, 313 (1990).Google Scholar
6. Spear, K.E., Benson, P., and Pantano, C.G. in High Temperature Materials Chemistry IV, edited by Munir, Z.A., Cubicciotti, D., and Tagawa, H. (The Electrochemical Society, Pennington, NJ 1988), pp. 345–354.Google Scholar
7. Benson, P.M., Spear, K.E., and Pantano, C.G., Ceram. Eng. Sci. Proc. 9 (7-8) 663–670 (1988).Google Scholar
8. Pantano, C.G., Spear, K.E., Qi, G., and Beall, D.M. in Advances in Ceramic-Matrix Composites. Transactions edited by Bansal, N. (Am. Ceram. Soc. 38, Westerville, OH 1993), pp. 173–198.Google Scholar
9. Paulson, T.E., Spear, K.E., and Pantano, C.G. in High Temperature Materials Chemistry IX, (Electrochem. Soc. 97–39, Pennington, NJ, 1997) pp 194–202. 388Google Scholar
10. Paulson, T. E., Spear, K. E. and Pantano, C. G., “Thermodynamic Analysis of the Tin Penetration Profile in High-Iron Float Glass,” To be published in proceedings of International Congress on Glass, Summer 1998.Google Scholar
11. Pelton, A.D. and Blander, M., Met. Trans. B 17b, 805 (1986).Google Scholar
12. Blander, M. and Pelton, A.D., Geochim. Cosmochim. Acta 51, 85 (1987).Google Scholar
13. Pelton, A. D., Pure and Applied Chem. 69 (11) 2245–2252 (1997).Google Scholar
14. Lupis, C. H. P., Chemical Thermodynamics Of Materials (North-Holland Pub., New York, 1983) p. 446.Google Scholar
15. Eriksson, G. and Hack, K., Met. Trans. B 21B, 1013–1023 (1990); ChemSageTM, Version 4.0, GTT Technologies, Kaiserstrasse 100, 52134 Herzogonrath, Germany, (1998).Google Scholar
16. SGTE Pure Substance Database, 1996 Version; produced by the Scientific Group Thermodata Europe, and obtained through GTT Technologies (see ref. 15).Google Scholar
17. Phase Diagrams for Ceramists, Volumes 1–12 (The American Ceramic Society, Westerville, OH, 1964–1996).Google Scholar