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Aluminophosphate Glasses with High Sulfate Content

Published online by Cambridge University Press:  15 February 2011

Sergey V. Stefanovsky ,
Igor A. Ivanov  and
Anatolii N. Gulin
Sergey V. Stefanovsky
Affiliation:
State Corp. «Radon», 7 Rostovskii Per., 2/14, 119121 Moscow, Russia
Igor A. Ivanov
Affiliation:
Institute Of Technology, Moskovskii Prosp., 26, 198013 St.-Petersburg, Russia
Anatolii N. Gulin
Affiliation:
Institute Of Technology, Moskovskii Prosp., 26, 198013 St.-Petersburg, Russia
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Abstract

To immobilize a high sulfate radioactive wastes a system Na2O-A12O3-P2O5-SO3 has been chosen as one where glasses have a relatively low melting points and good chemical durability. Glasses within partial system 44 Na2O, 20 A12O3 (36-x) P2O5 x SO3 have been prepared at 1000 °C. A possibility of assimilation up to 12 mole % of SO3 has been established. The basic properties of sulfate-containing glasses as density, microhardness, thermal expansion coefficient, transformation and deformation temperatures, viscosity, electric resistivity, leach rate of ions and diffusion coefficients of 22Na, 35S, 90Sr and 137Cs have been measured. Glass structure by infrared and EPR spectroscopies has been investigated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 353: Symposium – Scientific Basis for Nuclear Waste Management XVIII , 1994 , 101
Copyright
Copyright © Materials Research Society 1995

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References

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