DEVELOPMENT OF URANIUM MONONITRIDE. Quarterly Progress Report for October through December 1961

Technical Report · Mon Jan 01 04:00:00 EST 1962

OSTI ID:4793638

Keller, D L

Work in the program showed that UN powder can be hot pressed from 95 to 98% of theoretical density and such material is being used for property measurements. The thermal conductivity and electrical resistivity of UN were determined at 200 to 800 deg C. The conductivity of UN at 750 to 800 deg C is similar to that of UC. The water-corrosion resistance of UN is, however, significantly superior to UC: after 168 hr in 500 deg F deionized and degassed water a UN specimen showed a weight loss as low as 77 mg per cm/sup 2/. The solubility of H in UN was determined at 300 to 800 deg C. Thermal expansion and modulus of elasticity were determined, as well as hot hardness to 2000 deg F. In UN melting and casting studies buttons were prepared under N pressures ranging from 10 to 20 atm with compositions varying between 5.6 to 6.8 wt% N. The higher N content over that previously obtained is attributed in part to the shape of the crucible, which provides for a more uniform melt temperature. The first three of six irradiation capsules containing UN specimens were discharged from the MTR. Evaluation of these specimens is just beginning. (auth)

• Research Organization: Battelle Memorial Inst., Columbus, Ohio
• DOE Contract Number: W-7405-ENG-92
• NSA Number: NSA-16-015118
• OSTI ID: 4793638
• Report Number(s): BMI-X-186; EURAEC-260
• Country of Publication: United States
• Language: English

Related Subjects

CARBIDES
CASTING
CORROSION
CRUCIBLES
DENSITY
ELASTICITY
ELECTRIC CONDUCTIVITY
EXPANSION
FUEL CANS
HARDNESS
HYDROGEN
IRRADIATION
MEASURED VALUES
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
NITRIDES
NITROGEN
POWDERS
PRESSURE
SOLUBILITY
STABILITY
TEMPERATURE
THERMAL CONDUCTIVITY
URANIUM COMPOUNDS
WATER