Premium
The Quaternary System U‐C‐0‐N at 1700 C
Author(s) -
HENRY JACK L.,
BLICKENSDERFER ROBERT
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.tb09159.x
Subject(s) - phase diagram , uranium , isothermal process , solid solution , carbon monoxide , quaternary , lattice (music) , materials science , oxygen , phase (matter) , thermodynamics , chemistry , metallurgy , geology , physics , catalysis , paleontology , biochemistry , organic chemistry , acoustics
The quaternary system U‐C‐O‐N was examined at 1700°C by microstructural and X‐ray analyses of sintered powder compacts. Subliquidus phase relations, oxycarbonitride solid solution lattice parameters, and equilibrium pressures of N 2 and CO were studied. Although the emphasis was on the solid‐solution field in the uranium monocarbide‐mononitride‐monoxide region, phase fields in the uranium‐rich region and the carbon‐nitrogen‐oxygen‐rich region were examined. Nineteen fields were established experimentally, and their boundaries were located. Two other fields are postulated on the basis of phase rule and topological requirements. An isothermal phase diagram of the system is proposed.