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Phase Equilibria of Nuclear Waste Ceramics: The Effect of Oxygen Fugacity
Author(s) -
RYERSON F. J.
Publication year - 1984
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1984.tb09619.x
Subject(s) - aluminosilicate , plutonium , materials science , aluminate , mineral redox buffer , ceramic , phase (matter) , radioactive waste , caesium , oxygen , graphite , alkali metal , mineralogy , nuclear chemistry , inorganic chemistry , metallurgy , chemistry , catalysis , organic chemistry , cement , biochemistry
Wasteform phase assemblages and radionuclide immobilization are described for a Synroc‐D bulk composition processed at 1200°C under oxygen fugacities ( f O 2 ) ranging from air to those approximating graphite‐CO‐CO 2 buffer. All processing conditions produce assemblages of titanate and aluminate crystalline phases plus alkali aluminosilicate glass. In all cases the important radionuclides are immobilized in crystalline phases which have been shown to be highly leach‐resistant.