BASIC RESEARCH IN INORGANIC AND PHYSICAL CHEMISTRY AT HIGH TEMPERATURES. Fifth Annual Report

Technical Report · Sun Jun 30 04:00:00 EDT 1963

OSTI ID:4686208

Kirshenbaum, A D; Grosse, A V

The maximum-bubble-pressure method was used to measure the surface tension of liquid tin and sodium chloride over longer liquid temperature ranges than previously. The surface-tension equations obtained (dynes/cm) are: gamma / sub sn/ = 581.2 - 7.424 x 10/sup -2/ T deg K and gamma /sub NaCl/ = 188.8 - 7.7 5 x 10/sup -2/ T deg K. The surface tension of UF/sub 4/ and ThF/sub 4/ was measured in the same tubes over their whole nomral-liquid ranges and that of liquid uranium over a 400 deg range. The values obtained have the following linear equations in respect to temperature: gamma /sub UF4/ = 447.3 - 19.22 x 10/ sup -2/ T deg K, 10/sup -2/ T deg K. The density of liquid thorium was determined from its melting point (1968) to 2180 deg K. Extrapolation of the preliminary values gave a liquid density of 10.35 g/cm/sup 3/ at the melting point and an expansion on melting of 5.0%. The solid density of antimony from 20 deg C to its melting point was determined and found to have the following relationship to temperature. D/sub (S)/ in g/cm/sup 3/ = 6.967 -- 2.687 x 10/sup -4/ (T-299 deg K). Antimony expands 0.79 plus or minus 0.14% on melting. The composition of the iron-carbon system was determined from 2585 to 3148 deg K and its viscosity determined. The composition of the uranium-carbon system was determined from 2820 to 3025 deg K and that of the zirconium-carbon system at 3125 to 3150 deg K. Severai inorganic chemical reactions at high temperatures were studied. They include the synthesis of ThB/sub 6/ and the reactivity of liquid B with BN and liquid Mn with ThO/sub 2/. The centrifugal plasma-jet furnace was used to contain liquid Al near its boiling point and liquid B on Liquid Al/sub 2/O/sub 3/. Theoretical correlations were made between the activation energy of viscosity of liquid metals and their melting points. A comparison and discussion of the densities and critical constants of liquid barium and calcium were made. (auth)

• Research Organization: Temple Univ., Philadelphia. Research Inst.
• DOE Contract Number: AT(30-1)-2082
• NSA Number: NSA-17-028828
• OSTI ID: 4686208
• Report Number(s): TID-18951
• Country of Publication: United States
• Language: English

Related Subjects

ALUMINUM
ALUMINUM OXIDES
ANTIMONY
BARIUM
BOILING
BORON
BORON NITRIDES
CALCIUM
CARBON
CENTRIFUGATION
CHEMICAL REACTIONS
CHEMISTRY
COMPOUNDS
DENSITY
EXCITATION
EXPANSION
FURNACES
HIGH TEMPERATURE
IRON
LATTICES
LIQUID METALS
MANGANESE
MEASURED VALUES
MELTING POINTS
PHASE DIAGRAMS
PLASMA
PREPARATION
PRESSURE
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SODIUM CHLORIDES
SURFACES
THERMODYNAMICS
THORIUM
THORIUM BORIDES
THORIUM FLUORIDES
THORIUM OXIDES
TIN
URANIUM
URANIUM FLUORIDES
VISCOSITY
ZIRCONIUM