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

Published online by Cambridge University Press:  28 February 2011

P. Van Iseghem  and
B. Grambow
P. Van Iseghem
Affiliation:
Physics Department, S.C.K./C.E.N., B-2400 MOL, Belgium
B. Grambow
Affiliation:
Hahn-Meitner Institut, BERLIN, F.R. Germany
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Abstract

The corrosion behaviour in distilled water of two simulated candidate high level waste borosilicate glasses (SAN602519L3C2 and SM58LW11) his been investigated at 90°C for different SA/V condition's 10, 100, 7800 m−1). The experimental data were modelled using the PHREEQE and GLASSOL computer codes. The model is quite successful for describing the corrosion behaviour, using experimentally derived values for the forward rate, silica saturation and the final rate. GWss SAN60 is more stable than glass SM58 at SA/V values of 10 and 100 m−1, but in the long term the relative performance is inverse. Indeed, the high Al content of SAN60 induces the creation of analcime crystals after SiO2 has reached its saturation concentration in solution, which cause an enhancement of the final rate of dissolution of the glass; for SM58 on the contrary the SiO2 solution is a stable condition.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 112: Symposium P – Scientific Basis for Nuclear Waste Management XI , 1987 , 631
Copyright
Copyright © Materials Research Society 1988

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References

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