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Pourbaix Diagram for The Prediction of Waste Glass Durability in Geologic Environments

Published online by Cambridge University Press:  28 February 2011

Carol M. Jantzen
Carol M. Jantzen*
Affiliation:
E. I. du Pont de Nemours & Company, Savannah River Laboratory, Aiken, South Carolina 29808
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Abstract

Dissolution of nuclear waste glass occurs by corrosion mechanisms similar to those of metallurgical and mineralogic systems albeit on different time scales. The effects of imposed pH and oxidation potential (Eh) conditions existing in natural environments on metals and minerals have been quantatively and phenomenologically described in compendiums of Pourbaix (pH-potential) diagrams. Construction of Pourbaix diagrams to quantify the response of nuclear waste glasses to repository specific pH and Eh conditions is demonstrated. The expected long-term effects of groundwater contact on the durability of nuclear waste glasses can then be unified.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 112: Symposium P – Scientific Basis for Nuclear Waste Management XI , 1987 , 519
Copyright
Copyright © Materials Research Society 1988

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