G. A. Malinina, S. V. Stefanovsky, and O. I. Stefanovskaya
Moscow State Unitary Enterprise Joint Environmental Technology and Research Center for the Disposal
of Radioactive Solid Waste and the Environment Protection (SUE MosNPO Radon),
Sed’moi Rostovsky per. 2/14, Moscow, 119121 Russia
e-mail: profstef@mtu-net.ru
Received April 8, 2011
Abstract—Phase composition and structure of the glass materials obtained by fusing calcined emulator of
radioactive solid waste (RW) with glass-forming additives, namely, sodium disilicate or sodium tetraborate,
have been studied. Materials obtained by quenching the melts are mostly amorphous; upon slow cooling
(annealing), melts crystallize with the formation of materials containing phases of nepheline, britholite, and
spinel. Their quantitative ratio depends on the mass ratio of calcinate and glass-forming additives. Changes in
the structure of the anionic motif of the quenched glass materials with increasing content of RW and precipita-
tion of crystalline phases in the annealed materials have been studied by IR and Raman spectroscopy.
Keywords: borosilicate glass, britholite, sodium disilicate, IR spectroscopy, Raman spectroscopy, nepheline,
radioactive waste, spinel
DOI: 10.1134/S108765961203011X
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