Comparison of thermodynamic and kinetic measures of solute atom trapping in the Nb-V-O system

Journal Article · Sat Nov 01 04:00:00 EST 1986 · Acta Metall.; (United States)

DOI:https://doi.org/10.1016/0001-6160(86)90167-7· OSTI ID:7169097

Park, J; Altstetter, C J

Using solid-state electrochemical cells with zirconium sinks, the diffusivity of oxygen was measured across the entire range of Nb/V concentrations. The binding energies calculated according to theoretical models for trapping do not appear to depend on substitutional solute concentration, at least up to 10 at%. Vanadium atoms trap oxygen more strongly in niobium than niobium atoms do in vanadium. The kinetic behavior of oxygen is consistent with the thermodynamic observation that vanadium decreases the activity of oxygen in niobium-rich alloys, whereas niobium has a similar effect but to a smaller degree in vanadium-rich alloys.

• Research Organization: Dept. of Metallurgy and Mining Engineering and Materials Research Lab., Univ. of Illinois at Urbana-Champaign, 1304 W. Green, Urbana, IL (US)
• OSTI ID: 7169097
• Journal Information: Acta Metall.; (United States), Journal Name: Acta Metall.; (United States) Vol. 34:11; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

25 ENERGY STORAGE
250903 -- Energy Storage-- Batteries-- Materials
Components
& Auxiliaries
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALLOYS
BINDING ENERGY
CHEMICAL REACTION KINETICS
DIFFUSION
ELECTRIC BATTERIES
ELECTROCHEMICAL CELLS
ELEMENTS
ENERGY
KINETICS
MATHEMATICAL MODELS
METALS
NIOBIUM ALLOYS
OXYGEN COMPOUNDS
REACTION KINETICS
SOLUTES
THERMODYNAMICS
TRANSITION ELEMENTS
TRAPS
VANADIUM ALLOYS
ZIRCONIUM