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Nonisothermal kinetics of spinel crystallization in a HLW glass

Published online by Cambridge University Press:  10 February 2011

D. G. Casler  and
P. Hrma
D. G. Casler
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, [email protected]
P. Hrma
Affiliation:
Pacific Northwest National Laboratory, Richland, WA 99352, [email protected]
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Abstract

Nonisothermal kinetics of spinel crystallization in a high-level waste (HLW) glass was predicted using Mehl-Avrami-Johnson-Kolmogorov equation coefficients from isothermal data. The volume fraction of spinel was determined as a function of time, temperature, and cooling rate. The results were verified experimentally. Also predicted was the spatial distribution of spinel in a HLW glass canister. Finally, a parameter study was performed, and an empirical equation was proposed relating the final spinel volume fraction in glass to dimensionless numbers for cooling rate, phase equilibrium, and crystallization kinetics.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 556: Symposium QQ – Scientific Basis for Nuclear Waste Management XXII , 1999 , 255
Copyright
Copyright © Materials Research Society 1999

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References

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