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Constraints on the Affinity Term for Modeling Long-Term Glass Dissolution Rates

Published online by Cambridge University Press:  25 February 2011

William L. Bourcier
Affiliation:
Lawrence Livermore National Laboratory, L-219, Livermore CA 94550 USA
Susan A. Carroll
Affiliation:
Lawrence Livermore National Laboratory, L-219, Livermore CA 94550 USA
Brian L. Phillips
Affiliation:
Lawrence Livermore National Laboratory, L-219, Livermore CA 94550 USA
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Abstract

Predictions of long-term glass dissolution rates are highly dependent on the form of the affinity term in the rate expression. Analysis of the quantitative effect of saturation state on glass dissolution rate for CSG glass (a simple analog of SRL-165 glass), shows that a simple (1-Q/K) affinity term does not match experimental results. Our data at 100°C show that the data is better fit by an affinity term having the form where σ =10.

Type
Research Article
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

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