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Increases in Leach Rate due to Possible Cracking in Silicate Glasses

Published online by Cambridge University Press:  01 January 1992

J.C. Sang ,
A. Barkatt ,
I.G. Talmy  and
M.K. Norr
J.C. Sang
Affiliation:
Department of Chemistry, The Catholic University of America, Washington, DC 20064
A. Barkatt
Affiliation:
Department of Chemistry, The Catholic University of America, Washington, DC 20064
I.G. Talmy
Affiliation:
Naval Surface Warfare Center, Silver Spring, MD 20910
M.K. Norr
Affiliation:
Naval Surface Warfare Center, Silver Spring, MD 20910
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Abstract

Comparative studies of two multi-component silicate glasses have confirmed the observation that glasses with a relatively low SiO2 + AlO3/2 content may exhibit temporary increases in leach rate during the initial stages of their exposure to water. SEM studies of the leached glass surfaces strongly support the assumption that this phenomenon is due to cracking of the leached glass and a consequent increase of the exposed surface area.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 294: Symposium V – Scientific Basis for Nuclear Waste Management XVI , 1992 , 583
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

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