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Phase Relations In The Systems Based On Yttrium, Gadolinium, Manganese, Titanium, and Uranium Oxides Doped with Calcium, Aluminum and Iron Oxides

Published online by Cambridge University Press:  21 March 2011

Sergey V. Stefanovsky ,
Olga I. Stefanovsky ,
Sergey V. Yudintsev  and
Boris S. Nikonov
Sergey V. Stefanovsky
Affiliation:
SIA Radon, 7th Rostovskii lane 2/14, Moscow 119121 RUSSIA, profstef@radon.ru
Olga I. Stefanovsky
Affiliation:
SIA Radon, 7th Rostovskii lane 2/14, Moscow 119121 RUSSIA, profstef@radon.ru
Sergey V. Yudintsev
Affiliation:
Institute of Geology of Ore Deposits RAS, Staromonetnii lane 35, Moscow 109017, RUSSIA
Boris S. Nikonov
Affiliation:
Institute of Geology of Ore Deposits RAS, Staromonetnii lane 35, Moscow 109017, RUSSIA
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Abstract

Titanate-based ceramics with yttrium, gadolinium, manganese, uranium, calcium, aluminum, and iron oxides being of interest as matrices for radioactive wastes containing lanthanides, actinides and corrosion products were synthesized using cold pressing and sintering and melting routes. Major constituents of the ceramics are fluorite structure phases (pyrochlore, “murataite”, cubic oxide with fluorite-related lattice) as well as brannerite. Incorporation of aluminum and iron oxides (corrosion products) forms second phases with perovskite or/and crichtonite structure.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 932: Symposium – Scientific Basis for Nuclear Waste Management XXIX , 2006 , 58.1
Copyright
Copyright © Materials Research Society 2006

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References

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