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Liquidus Temperature of High-Level Waste Borosilicate Glasses With Spinel Primary Phase

Published online by Cambridge University Press:  10 February 2011

Pavel Hrma ,
John Vienna ,
Jarrod Crum ,
Greg Piepel  and
Martin Mika
Pavel Hrma
Affiliation:
Pacific Northwest National Laboratory, Box 999, Richland, WA MARTIN MIKA
John Vienna
Affiliation:
Pacific Northwest National Laboratory, Box 999, Richland, WA MARTIN MIKA
Jarrod Crum
Affiliation:
Pacific Northwest National Laboratory, Box 999, Richland, WA MARTIN MIKA
Greg Piepel
Affiliation:
Pacific Northwest National Laboratory, Box 999, Richland, WA MARTIN MIKA
Martin Mika
Affiliation:
Institute of Chemical Technology, Technicka 5, 16628 Prague, Czech Republic
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Abstract

Liquidus temperatures (TL) were measured for high-level waste (HLW) borosilicate glasses covering a Savannah River composition region. The primary crystallization phase for most glasses was spinel, a solid solution of trevorite (NiFe2O4) with other oxides (FeO, MnO, and Cr2O3). The TL values ranged from 859 to 1310°C. Component additions increased the TL (per mass%) as Cr2O3 261°C, NiO 85°C, TiO2 42°C, MgO 33°C, A12O3 18°C, and Fe2O3 18°C and decreased the TL (per mass%) as Na2O −29°C, Li2O −28°C, K2O −20°C, and B2O3 −8°C. Other oxides (CaO, MnO, SiO2, and U3O8) had little effect. The effect of RuO2 is not clear.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 608: Symposium QQ – Scientific Basis for Nuclear Waste Management XXIII , 1999 , 671
Copyright
Copyright © Materials Research Society 2000

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References

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