Permeation of hydrogen isotopes in nickel

Journal Article · Wed Dec 27 23:00:00 EST 1978 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100515a018· OSTI ID:6281842

Bell, J T; Redman, J D

Tritium permeabilities of nickel over the 500 to 1100 K range have been determined and compared to deuterium and protium permeabilities. Solubility data for the three isotopes have been calculated from these permeability data and literature data for diffusivities. Then isotope effects on solubilities, diffusivities, and permeabilities were tabulated. Net isotope effects on hydrogen permeation above room temperatures decrease permeabilities for the heavier isotopes, and isotope effects extrapolated to 1500 K correspond to the square root of the inverse mass ratios. Tritium permeation rates were observed to vary with the square root of tritium pressures as low as 10/sup -10/ torr, and a general equation was derived to calculate hydrogen pressures at specific temperatures where the square root relationship may be expected to fail. 3 figures, 3 tables.

• Research Organization: Oak Ridge National Lab., TN
• OSTI ID: 6281842
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 82:26; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400202* -- Isotope Effects
Isotope Exchange
& Isotope Separation
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COMPARATIVE EVALUATIONS
CRYOGENIC FLUIDS
DEUTERIUM
DIFFUSION
ELEMENTS
FLUIDS
HIGH TEMPERATURE
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPE EFFECTS
ISOTOPES
LIGHT NUCLEI
METALS
NICKEL
NONMETALS
NUCLEI
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PERMEABILITY
PRESSURE DEPENDENCE
RADIOISOTOPES
SOLUBILITY
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS
TRITIUM
YEARS LIVING RADIOISOTOPES