URANIUM DIFFUSION INTO ZIRCONIUM FROM URANIUM-MOLYBDENUM ALLOYS

Journal Article · Sun Jan 01 04:00:00 EST 1961 · Met. i Metalloved. Chistykh Metal., Sb. Nauchn. Rabot

OSTI ID:4730689

Fedorov, G B; Zhomov, F I

ABS>The diffusion of U in iodide Zr from U- Mo alloys contained by wedging U-Mo alloy plates into Zr specimens. The specimens were annealed in evacuated quartz ampoules at 900 to 1050 nif- C for 160 hr. Then thin layers were taken off the contact surface and the integrated alpha activity of the remaining specimen portion was measured. At 950, 1000, and 1055 nif- C diffusion coefficients of 3% Mo alloys were calculated and found to be equal to 4 x 10/sup -12/, 1.8 x 10/sup -11/, and 9 x 10/sup -11/ cm/sup 2//sec, respectively. At 900, 950, 1000, and 1055 nif- C the diffusion coefficients of 9% Mo alloys were equal to 5.6 x 10/sup -12/, 1.5 x 10/sup -11/ ,5.8 x 10/sup -11/ and 2.5 x 10/sup -10 ,/ respectively. The pre-exponential factors for U, 3% Mo and 9% Mo were 0.46, 5.7 x 10/sup 2/ and 2.8 x 10/sup 5/ cm/ sup 2//sec, respectively; the activation energies determined were equal to 47,300, 76,000, and 95,000 cal/g-atom, respectively. It was concluded that the effect of inhibited U diffusion in Zr can manifest itself in the hardening of U during its alloying with Mo rather than as a result of alloying Zr with another element. (Referativnyy Zhurnal, Metallurgiya, No. 8, 1962).

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-018821
• OSTI ID: 4730689
• Journal Information: Met. i Metalloved. Chistykh Metal., Sb. Nauchn. Rabot, Journal Name: Met. i Metalloved. Chistykh Metal., Sb. Nauchn. Rabot Vol. Vol: No. 3
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION
ANNEALING
DIFFUSION
ENERGY
HIGH TEMPERATURE
LAYERS
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
MOLYBDENUM ALLOYS
PLATES
QUARTZ
SURFACES
TEMPERING
THICKNESS
URANIUM
URANIUM ALLOYS
VESSELS
ZIRCONIUM
ZIRCONIUM IODIDES