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Isothermal Crystallization Kinetics in Simulated High-Level Nuclear Waste Glass

Published online by Cambridge University Press:  03 September 2012

John D. Vienna ,
Pavel Hrma  and
Donald E. Smith
John D. Vienna
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352
Pavel Hrma
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352
Donald E. Smith
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352
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Abstract

Crystallization kinetics of a simulated high-level waste (HLW) glass were measured and modelled. Kinetics of acmite growth in the standard HW39–4 glass were measured using the isothermal method. A time-temperature-transformation (TTT) diagram was generated from these data. Classical glass-crystal transformation kinetic models were empirically applied to the crystallization data. These models adequately describe the kinetics of crystallization in complex HLW glasses (i.e., RSquared = 0.908). An approach to measurement, fitting, and use of TTT diagrams for prediction of crystallinity in a HLW glass canister is proposed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 465: Symposium II – Scienfific Basis for Nuclear Waste Management XX , 1996 , 17
Copyright
Copyright © Materials Research Society 1997

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References

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