Abstract
The effect of the method of synthesis on the structure of aluminophosphate glasses intended for immobilization of high level waste from uranium–graphite channel reactor spent nuclear fuel reprocessing has been studied by X-ray powder diffraction and Fourier transform IR spectroscopy. Slow cooling in a furnace, both spontaneous cooling in a switched-off furnace and cooling simulating the conditions of glass cooling in their disposal canisters, or additional heat treatment (annealing) led to partial crystallization of glasses with segregation of different modifications of aluminum orthophosphate. For orthoand pyrophosphate based glasses with similar anionic motifs, their phase composition and degree of crystallization depend not so much on the chemical composition of a sample as on its heat treatment history.
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Original Russian Text © S.V. Stefanovsky, O.I. Stefanovskaya, M.I. Kadyko, M.B. Remizov, P.V. Kozlov, E.A. Belanova, B.F. Myasoedov, 2016, published in Doklady Akademii Nauk, 2016, Vol. 466, No. 5, pp. 563–568.
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Stefanovsky, S.V., Stefanovskaya, O.I., Kadyko, M.I. et al. Phase composition and structure of sodium aluminophosphate based glass materials depending on their synthesis conditions. Dokl Phys Chem 466, 32–36 (2016). https://doi.org/10.1134/S0012501616020020
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DOI: https://doi.org/10.1134/S0012501616020020