Premium
Phase Relations in Crystalline Ceramic Nuclear Waste Forms: The System UO 2+x ‐CeO 2 ‐ZrO 2 ‐ThO 2 at 1200°C in Air
Author(s) -
PEPIN JOHN G.,
MCCARTHY GREGORY J.
Publication year - 1981
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.1151-2916.1981.tb10315.x
Subject(s) - orthorhombic crystal system , fluorite , solid solution , ceramic , materials science , phase (matter) , mineralogy , analytical chemistry (journal) , crystal structure , solid state , crystallography , chemistry , metallurgy , organic chemistry , chromatography
Steady‐state phase relations in the system UO 2+x ‐CeO z ‐ZrO 2 ‐ThO 2 were determined for application to phase relations in high‐level crystalline ceramic nuclear waste forms. Samples were treated at 1200°C at an oxygen partial pressure of 21.3 kPa and a total pressure of 101.3 kPa. Phase assemblages were found to be comprised of cubic solid solutions of the fluorite‐structure type, solid solutions based on ZrO 2 , and orthorhombic solid solutions based on U 3 O 8 .