SELF-DIFFUSION OF ZIRCONIUM IN THE /cap beta/-PHASE OF "ZIRCALOY-2"

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

OSTI ID:4709647

Fedorov, G B; Zhomov, F I

Zircaloy-2 was smelted in an arc furnace in a purified argon atmosphere from iodide Zr containing (in wt%): Pb 1.5, Fe 0.12. Cr 0.05, and Ni 0.05. On specimens (9 x 10 x 18 mm) Zr/sup 95/ isotope was applied by spraying in a vacuum. Diffusion annealing was performed in a vacuum at 950 to 1200 nif- C. The diffusion coefficient, D, was determined by laminar integral radiometric analysis. At 950, l.7 x 10/sup -9/, 4 x 10/sup -9/, and 8.4 x 10/sup -9/cm/sup 2/ /sec, respec tively. The pre-exponential factor and activation energy of Zr selfdiffusion in Zircaloy-2 were 6 x 10/sup -3/ cm/sup 2//sec and 40,000 cal/g- atom, respectively. It was concluded that an increase in activation energy of Zr self-diffusion in Zircaloy-2 as compared with pure Zr, indicates an increased strength of interatomic bond in alloying with Zr. D was lower in the temperature range investigated in Zircaloy-2 than in pure Zr. Diffusion characteristics of Zircaloy-2 almost do not differ from corresponding characteristics of Zr alloy with 1.5% Sn. (Referativnyy Zhurnal, Metallurgiya, No. 8, 1962).

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-018820
• OSTI ID: 4709647
• 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
ARGON
CHROMIUM
DIFFUSION
ELECTRIC ARCS
ENERGY
FURNACES
HIGH TEMPERATURE
IRON
ISOTOPES
LEAD
MELTING
METALS, CERAMICS, AND OTHER MATERIALS
NICKEL
PHASE DIAGRAMS
RADIOCHEMISTRY
SPUTTERING
TRACER TECHNIQUES
VACUUM
ZIRCALOY
ZIRCONIUM
ZIRCONIUM 95
ZIRCONIUM IODIDES