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Origins of Discrepancies Between Kinetic Rate Law Theory and Experiments in the Na2O-B2O3-SiO2 System

Published online by Cambridge University Press:  21 March 2011

B. P. McGrail ,
J. P. Icenhower  and
E. A. Rodriguez
B. P. McGrail
Affiliation:
Applied Geology and Geochemistry Department, Pacific Northwest National Laboratory, Richland, WA 99352, pete.mcgrail@pnl.gov
J. P. Icenhower
Affiliation:
Applied Geology and Geochemistry Department, Pacific Northwest National Laboratory, Richland, WA 99352, pete.mcgrail@pnl.gov
E. A. Rodriguez
Affiliation:
Applied Geology and Geochemistry Department, Pacific Northwest National Laboratory, Richland, WA 99352, pete.mcgrail@pnl.gov
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Abstract

Discrepancies between classical kinetic rate law theory and experiment were quantitatively assessed and found to correlate with macromolecular amorphous separation in the sodium borosilicate glass system. A quantitative reinterpretation of static corrosion data and new SPFT data shows that a recently advanced protective surface layer theory fails to describe the observed dissolution behavior of simple and complex silicate glasses under carefully controlled experimental conditions. The hypothesis is shown to be self-inconsistent in contrast with a phase separation model that is in quantitative agreement with experiments.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 713: Symposium JJ – Scientific Basis for Nuclear Waste Management XXV , 2002 , JJ13.1
Copyright
Copyright © Materials Research Society 2002

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References

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