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The Long-Term Corrosion and Modelling of Two Simulated Belgian Reference High-Level Waste Glasses - Part II

Published online by Cambridge University Press:  21 February 2011

J. Patyn ,
P. Van Iseghem  and
W. Timmermans
J. Patyn
Affiliation:
S.C.K/C.E.N., Boeretang 200, B-2400 Mol, Belgium
P. Van Iseghem
Affiliation:
S.C.K/C.E.N., Boeretang 200, B-2400 Mol, Belgium
W. Timmermans
Affiliation:
S.C.K/C.E.N., Boeretang 200, B-2400 Mol, Belgium
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Abstract

The long term corrosion of two reference Belgian high-level waste glasses (SAN60 and SM58) were investigated in pure water. The corrosion was studied using powdered glass at a high surface area to volume ratio and temperatures of 90 and 120°C. The experimental data at 90°C reveal a “final” leach rate which decreases with time. At 120°C this “final” state is transient and followed by an enhanced dissolution, which was correlated with extensive surface crystallization. Modelling using the PHREEQE and GLASSOL computer codes described the initial corrosion, but was unable to account for the enhanced dissolution at 120°C.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 176: Symposium U – Scientific Basis for Nuclear Waste Management XIII , 1989 , 299
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

[1] Iseghem, P. Van, Timmermans, W., Batist, R. De; in Scientific Basis for Nuclear Waste Management VIII, edited by Jantzen, C.M., Stone, J.A. and Ewing, R.C. (Mater. Res. Soc., Proc. 44, Pittsburgh, PA 1985, pp.55–62 Google Scholar
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[3] PNL-5157, Final Report of the Defense High-Level Waste Leaching Mechanisms Program, 1984 Google Scholar
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