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Behavior of Urania–Rare‐Earth Oxides at High Temperatures
Author(s) -
BEALS R. J.,
HANDWERK J. H.,
WRONA B. J.
Publication year - 1969
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.1151-2916.1969.tb15843.x
Subject(s) - rare earth , uranium , oxide , phase diagram , uranium dioxide , atmosphere (unit) , earth (classical element) , materials science , hydrogen , metal , uranium oxide , phase (matter) , reducing atmosphere , mineralogy , astrobiology , chemistry , metallurgy , thermodynamics , physics , organic chemistry , mathematical physics
Uranium dioxide becomes hypostoichiometric when hated above 1600°C or in a reducing atmosphere. Upon cooling, free metallic uranium is rejected. The role and the effect of rare‐earth oxide additives on the stabilization of urania at high temperatures in a hydrogen environment are evaluated. A tentative phase diagram for the system uraniagadolinia is proposed.