Diffusion of zirconium in niobium: The influence of fast diffusing impurities on the self-diffusion isotope effect

Journal Article · Sat Jan 14 23:00:00 EST 1978 · Phys. Rev., B; (United States)

DOI:https://doi.org/10.1103/PhysRevB.17.449· OSTI ID:5201592

Einziger, R E; Mundy, J N

The diffusion of /sup 95/Zr in niobium was measured over the temperature range from 1923 to 2523 K. The data fit the Arrhenius relation D = 0.85 exp(-3.93 eV/kT) cm/sup 2/ sec/sup -1/. The changes in the self-diffusion isotope effect caused by ultralow levels (less than 100 at. ppm) of a fast-diffusing radioactive impurity are analyzed. It is concluded that radioactive-impurity levels not easily observed by Ge(Li) detectors can introduce large errors into the measurement of the isotope effect.

• Research Organization: Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439
• OSTI ID: 5201592
• Journal Information: Phys. Rev., B; (United States), Journal Name: Phys. Rev., B; (United States) Vol. 17:2; ISSN PLRBA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101 -- Metals & Alloys-- Preparation & Fabrication
360104* -- Metals & Alloys-- Physical Properties
ARRHENIUS EQUATION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DAYS LIVING RADIOISOTOPES
DIFFUSION
ELEMENTS
EVEN-ODD NUCLEI
IMPURITIES
INTERMEDIATE MASS NUCLEI
ISOTOPE EFFECTS
ISOTOPES
METALS
NIOBIUM
NUCLEI
RADIOISOTOPES
REFRACTORY METALS
SELF-DIFFUSION
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
VERY HIGH TEMPERATURE
ZIRCONIUM
ZIRCONIUM 95
ZIRCONIUM ISOTOPES