论文信息 - Studies on the Uranium Dicarbide Phase

Studies on the Uranium Dicarbide Phase

The lattice parameters of UC2 are examined as a function of carbon content and annealing: conditions on sintered carbides between UC1·5 and UC2·2 (7.0 to 10.0W/0 of carbon). The values of UC2 obtained under equilibrium state are around a 0=3.5253 A and c 0=5.9994A. The lattice parameter measurements were made also on UC2 obtained under non-equilibrium conditions by are-melting and carbothermic reaction of UO2. The lattice parameters were appreciably smaller than on the specimens obtained under equilibrium. With annealing, both the lattice parameter and the combined carbon content showed a tendency to increase.

H. Tagawa | K. Fujii | Y. Sasaki

[1] H. Tagawa,et al. Formation of U2C3 in the reaction of UC2 with UO2 , 1971 .

[2] Tagawa Hiroaki. The variation of lattice parameter with carbon content of non-stoichiometric uranium dicarbide , 1970 .

[3] J. Hennecke,et al. The lattice parameter and X-ray powder pattern of U2C3 , 1969 .

[4] L. M. Ferris,et al. Studies on the U-C constitutional diagram between UC and UC2 , 1969 .

[5] M. Atoji. Neutron Diffraction Study of Ce2S3 at 300–5°K , 1967 .

[6] M. Atoji. Neutron‐Diffraction Study of UC2 at 300°−5°K , 1967 .

[7] N. Nereson,et al. The crystal structure of UC2 , 1966 .

[8] W. Chubb. Carbides in Nuclear Energy , 1965, Nature.

[9] W. B. Wilson. HIGH-TEMPERATURE X-RAY DIFFRACTION INVESTIGATION OF THE URANIUM-CARBON SYSTEM , 1960 .

[10] R. C. Medrud,et al. Structures of Calcium Dicarbide and Uranium Dicarbide by Neutron Diffraction , 1959 .

[11] A. E. Austin. Carbon positions in uranium carbides , 1959 .

[12] J. Kalnajs,et al. PRECISION DETERMINATION OF LATTICE CONSTANTS WITH A GEIGER-COUNTER X-RAY DIFFRACTOMETER. TECHNICAL REPORT NO. 92 , 1955 .

[13] E. L. McGandy,et al. AN X-RAY STUDY OF THE SYSTEM URANIUM MONOCARBIDE-URANIUM DICARBIDE- BERYLLIUM CARBIDE , 1955 .

[14] R. A. McDonald,et al. The Structures of the Carbides, Nitrides and Oxides of Uranium1 , 1948 .