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Structural Characterization and Analysis of Glasses in the Al2O3-B2O3-Fe2O3-Na2O-SiO2 System

Published online by Cambridge University Press:  25 January 2013

S.V. Stefanovsky ,
B.S. Nikonov ,
B.I. Omelyanenko ,
K.M. Fox  and
J.C. Marra
S.V. Stefanovsky
Affiliation:
SIA Radon, 7th Rostovskii lane 2/14, Moscow 119121 Russia, [email protected] Institute of Physical Chemistry and Electrochemistry RAS, Leninskii av. 31, Moscow 119071 Russia
B.S. Nikonov
Affiliation:
Institute of Geology of Ore Deposits RAS, Staromonetniy 35, Moscow 119117 Russia
B.I. Omelyanenko
Affiliation:
Institute of Geology of Ore Deposits RAS, Staromonetniy 35, Moscow 119117 Russia
K.M. Fox
Affiliation:
Savannah River National Laboratory, Building 773-A, Aiken 29808 U.S.A.
J.C. Marra
Affiliation:
Savannah River National Laboratory, Building 773-A, Aiken 29808 U.S.A.
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Abstract

Glasses in the Al2O3-B2O3-Fe2O3-Na2O-SiO2 system were produced at a temperature of 1150 °C, annealed, and examined using XRD and SEM/EDX. Surfaces of same samples were additionally heat-treated and etched with HCl. The pristine samples were X-ray amorphous and rather homogeneous except the B1 sample that contained trace crystalline phases of carnegieite/nepheline and spinel. Corrosion of these glasses via an etching treatment proceeds by a conventional mechanism with damage of their surface layers, however, the B2 glass exhibits a “drop-type” microstructure after etching that suggests occurrence of liquid-liquid phase separation.

Keywords

electron microprobescanning electron microscopy (SEM)x-ray diffraction (XRD)
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1518: Symposium LL – Scientific Basis for Nuclear Waste Management XXXVI , 2012 , pp. 47 - 52
Copyright
Copyright © Materials Research Society 2013 

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References

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