THE TERNARY SYSTEM THORIUM-BORON-CARBON

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Monatshefte fuer Chemie (Austria)

DOI:https://doi.org/10.1007/BF00924760· OSTI ID:4170685

Toth, L E; Benesovsky, F; Nowotny, H; Rudy, E

Th--B--C systems were studied roentgenographically by means of sintered and molten samples. About 100 samples were prepared. In the phase diagram area represented by and 1000 deg C (argon, 5 hr), and in the other areas it was about 1400 deg for 15 hr. As in the U--B--C system the binary crystal types ThC, ThC/ sub 2/, ThB/sub 4/, ThB/sub 6/, and B/sub 4/C were detected. The possible transition of ThC to ThC/sub 2/ (a high temperature form) was not studied in detail. Within the temperature range where Th, B, and C were studied, Th carbide and boride were not mutually soluble. However, the marked tendency for compound formation resulted in four crystal forms, ThB/sub 2/C, ThBC, ThBC/sub 2/, and Th/ sub 2/BC/sub 2/. The structure of ThB/sub 2/C is suggested tentatively to be of a C32 hexagonal type. Sintered samples of ThBC showed a complex roentgenographic pattern which suggested a H-stabilized phase, ThBC/sub 2/ is stable in air, but Th/sub 2/BC/sub 2/, like ThC/sub 2/, deco mposes in air, suggesting a close similarity between these two alloys. (BBB)

• Research Organization: Universitat, Vienna and Metallwerk Plansee AG, Reutte, Austria
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-000620
• OSTI ID: 4170685
• Journal Information: Monatshefte fuer Chemie (Austria), Journal Name: Monatshefte fuer Chemie (Austria) Vol. Vol: 92; ISSN MOCHA
• Country of Publication: Country unknown/Code not available
• Language: German

Related Subjects

AIR
ARGON
BORON
CARBON
CRYSTALS
DECOMPOSITION
HIGH TEMPERATURE
INERT GASES
LATTICES
METALS, CERAMICS, AND OTHER MATERIALS
PHASE DIAGRAMS
PREPARATION
RADIOGRAPHY
SAMPLING
SINTERED MATERIALS
SOLUBILITY
STABILITY
STANDARDS
THERMODYNAMICS
THORIUM
THORIUM BORIDES
THORIUM CARBIDES
URANIUM BORIDES
URANIUM CARBIDES