Self-diffusion in $alpha$-Zirconium; SELBSTDIFFUSIONSVERSUCHE IN $alpha$-ZIRKON

Technical Report · Wed May 01 04:00:00 EDT 1963

OSTI ID:4084035

Flubacher, P

Measurements of the self-diffusion coefflcient were made between 751 and 845 deg C on three materials different in purity and preliminary treatment. Zr/ sup 95/ was used as tracer, and, in spite of the small diffusion coefflcients of 10/sup -12/ to 10/sup -13/ cm/sup 2//sec, the classical slicing technique'' was applied. Before counting, the daughter product Nb/sup 95/ was chemically separated. The penetration curves showed at great penetration depths a tail, which cannot be traced back to volume diffusion. The results of the three materials do not vary significantly from each other within the relatively large scattering. An analysis by the least-squares method gave for the diffusion coefflcient D/sub Zr/ = 5.8 x 10/sup -4/ exp (--45500/RT) cm/sup 2//sec. The activation energy of 45500 cal/ mole was small but corresponded qualitatively with other properties as resistance and annealing mechanism of radiation damage. (tr-auth)

• Research Organization: Switzerland. Eidgenossisches Institut fur Reaktorforschung, Wurenlingen
• NSA Number: NSA-18-014458
• OSTI ID: 4084035
• Report Number(s): EIR-49
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACTIVATION ENERGY
ANNEALING
CHEMICALS
DIAGRAMS
DIFFUSION
HIGH TEMPERATURE
IMPURITIES
MATHEMATICS
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
NIOBIUM 95
RADIATION EFFECTS
SCATTERING
SEPARATION PROCESSES
STABILITY
THERMODYNAMICS
TRACER TECHNIQUES
VOLUME
ZIRCONIUM 95