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Home Archive of journals 1 (2), March 2018 Phase Composition and Structure of Glassy Materials on Sodium Aluminophosphate Basis Containing Rare Earth Oxides

PHASE COMPOSITION AND STRUCTURE OF GLASSY MATERIALS ON SODIUM ALUMINOPHOSPHATE BASIS CONTAINING RARE EARTH OXIDES

JOURNAL: 2018, 2, p. 97-101

AUTHOR: S.V. Stefanovsky, O.I. Stefanovskaya, D.V. Semenova

ANNOTATION:

phase composition of sodium-aluminum-phosphate glasses containing rare earth (RE = lanthanum, cerium,
europium, and gadolinium) oxides produced by melt quenching and slow cooling, the structure and hydrolytic
durability of glasses were determined. Incorporation of up to ~5 wt.% RE oxides does not cause their devitrification during the quenching (with the exception of La-containing glass) and has no significant effect on their structure and hydrolytic stability. After annealing the glasses on the sodium-aluminophosphate basis are subject to devitrification with segregation of sodium-aluminophosphate, RE- (monazite) and sodium RE-phosphate phases.

Keywords: hydrolytic durability, infrared spectroscopy, leaching, rare earth elements, sodium-aluminophosphate glass, X-ray
diffraction.


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Stefanovsky S. V., Stefanovskaya O. I., Semenova D. V. Phase Composition and Structure of Glassy Materials
on Sodium Aluminophosphate Basis Containing Rare Earth Oxides. Radioactive Waste, 2018, no 1 (2),
pp. 97—101 (In Russian).


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