Diffusion and trapping of oxygen in refractory metal alloys. [600 to 1150/sup 0/C]

Journal Article · Sun Jul 01 04:00:00 EDT 1979 · Acta Metall.; (United States)

DOI:https://doi.org/10.1016/0001-6160(79)90133-0· OSTI ID:6195084

Lauf, R J ^[1]; Altstetter, C J

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1. Oak Ridge National Lab., TN

The diffusion coefficient of oxygen has been measured in niobium, vanadium and several dilute substitutional niobium alloys. Measurements were made over the range of 600 to 1150/sup 0/C (873 to 1423 K) using a solid electrolytic cell technique. Oxygen diffusivity in the alloys was found to be less than in pure niobium. This is interpreted as being due to trapping of oxygen atoms by the substitutional solute atoms. The estimated substitutional-oxygen binding or trap energies (in eV) for the solutes investigated are: Ta, 0.3 +- 0.1; V, 0.55 +- 0.05; Ti, 0.7 +- 0.1; Zr, 0.7 +- 0.05.

• OSTI ID: 6195084
• Journal Information: Acta Metall.; (United States), Journal Name: Acta Metall.; (United States) Vol. 27:7; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALLOYS
CRYOGENIC FLUIDS
DATA FORMS
DIFFUSION
ELEMENTS
FLUIDS
GRAPHS
HARDNESS
HIGH TEMPERATURE
MECHANICAL PROPERTIES
METALS
MICROHARDNESS
NIOBIUM
NIOBIUM ALLOYS
NIOBIUM BASE ALLOYS
NONMETALS
OXYGEN
REFRACTORY METALS
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TANTALUM
TANTALUM ALLOYS
TITANIUM
TITANIUM ADDITIONS
TITANIUM ALLOYS
TRANSITION ELEMENTS
VANADIUM
VANADIUM ALLOYS
ZIRCONIUM