Hostname: page-component-78c5997874-s2hrs Total loading time: 0 Render date: 2024-11-03T03:24:03.825Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of Platinoids on French LWR Reference Glass Properties

Published online by Cambridge University Press:  25 February 2011

F. Pacaud ,
C. Fillet  and
N. Jacquet-Francillon
F. Pacaud
Affiliation:
Rhône Valley Nuclear Research Center, DPR/SCD, BP 171, F 30205 Bagnols-sur-Cèze, France
C. Fillet
Affiliation:
Rhône Valley Nuclear Research Center, DPR/SCD, BP 171, F 30205 Bagnols-sur-Cèze, France
N. Jacquet-Francillon
Affiliation:
Rhône Valley Nuclear Research Center, DPR/SCD, BP 171, F 30205 Bagnols-sur-Cèze, France
Get access

Abstract

Nine samples of the “R7T7” glass composition selected to vitrify fission product solutions in France were prepared with added platinoid elements (ruthenium, rhoditun and palladium) in soluble form and as insoluble metal particles in solution, and their major properties were measured. Regardless of the initial form when added to the glass the platinoids always formed the same heterogeneous inclusions in the final glass: RuO2 precipitates which were often found as aggregates, and polymetallic (Pd, Rh & Te) inclusions.

The particles tended to settle in the molten glass. The viscosity increased by about 20% at 1100°C. The mechanical properties and short-term leach rates were not significantly affected. Crystallization increased by a factor of 2 or 3 in heat-treated glass specimens but did not exceed a few volume percent. However, as the short-term leach rate did not significantly increase, the glass properties were very satisfactory.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 257: Symposium – Scientific Basis for Nuclear Waste Management XV , 1991 , 161
Copyright
Copyright © Materials Research Society 1992

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. Peters, R.D., Elliott, M.L. and Chapman, C.C., “Proposed Noble Metals-Compatible Melter: Preliminary Modeling Results”, 4th International Symposium on Ceramics in Nuclear Waste Management, American Ceramic Society Annual Meeting, Indianapolis (April 23-27, 1989).Google Scholar
2. Bickford, D.F., Allen, P.M. and Peters, S.M., “Noble Metal Accumulation and Recovery in DWPF Waste Glass Melter”, 4th International Symposium on Ceramics in Nuclear Waste Management, American Ceramic Society Annual Meeting, Indianapolis (April 23-27, 1989).Google Scholar
3. Kelm, M., Pentinghaus, H. and Oser, B., Chemische Vorgänge bei der Verglasung von HAWC: Untersuchungen mit Hilfe eines flüssiggespeisten Laborschmelzers, KfK 4476 (Oct 1988).Google Scholar
4. Kawamura, K., Takahashi, T., Horie, M. and Stunoda, N., “Characterization of High-Level Waste Glass”, 4th International Symposium on Ceramics in Nuclear Waste Management, American Ceramic Society Annual Meeting, Indianapolis (April 23-27, 1989).Google Scholar
5. Pacaud, F., Fillet, C., Baudin, G. and Bastien-Thiry, H., “Characterization of the R7T7 LWR Reference Glass”, 2nd International Seminar on Radioactive Waste Products, Jülich (May 2-June 6,1990).Google Scholar
6. Terki, A., Pacaud, F., Jacquet-Francillon, N. and Morlevat, J.P., “Methodology for Evaluating the Aqueous Leach Resistance of a Glass Used in a Characterization Study”, 1st International Seminar on Radioactive Waste Products, Jülich (June 10-13,1985).Google Scholar
7. Vernaz, E., Deymier, P. and Jacquet-Francillon, N., “Mechanical Properties of Some Candidate Glasses for High-Level Radioactive Waste Management”, 2nd International Symposium on Ceramics in Nuclear Waste Management, Chicago (April 24-27,1983).Google Scholar
8. Pacaud, F., Jacquet-Francillon, N., Terki, A. and Fillet, C., “R7T7 Light Water Reference Glass Sensitivity to Variations in Chemical Composition and Operating Parameters”, Scientific Basis for Nuclear Waste Management, Berlin (October 10-13, 1988).Google Scholar