Microstructural studies of hydrogen and deuterium in bcc refractory metals. Final technical report
Research was conducted on the microstructural atomic arrangements in alloys of hydrogen and deuterium with bcc refractory metals with emphasis on V and Nb. Because these are interstitial phases in which the host metal lattice is substantially deformed by the incorporation of the H(D) atoms, there are pronounced x-ray scattering effects. X-ray diffraction was used, with neutron scattering providing useful corollary data. One objective was to determine the phase relations, solid solution structures and phase transitions in metal-hydride alloys which depend upon the hydrogen-hydrogen interaction via the displacement field of the metal atoms. This has often included the elucidation of subtle thermodynamic properties (as in critical wetting) which are revealed in structural studies. Crystals were supplied for positron annihilation studies of the Fermi surface of H-Ta alloys which have revealed significant electronic trends. Work on alkali-graphite intercalates was initiated.
- Research Organization:
- Houston Univ., TX (USA). Dept. of Physics
- DOE Contract Number:
- AS05-76ER05111
- OSTI ID:
- 6833142
- Report Number(s):
- DOE/ER/05111-T1; ON: DE84011506
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
NIOBIUM HYDRIDES
WETTABILITY
TANTALUM HYDRIDES
FERMI LEVEL
VANADIUM HYDRIDES
ORDER-DISORDER TRANSFORMATIONS
CLATHRATES
DEUTERIUM COMPOUNDS
GRAPHITE
MICROSTRUCTURE
NEUTRON DIFFRACTION
POSITRONS
RESEARCH PROGRAMS
X-RAY DIFFRACTION
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
CARBON
COHERENT SCATTERING
CRYSTAL STRUCTURE
DIFFRACTION
ELEMENTAL MINERALS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
FERMIONS
HYDRIDES
HYDROGEN COMPOUNDS
LEPTONS
MINERALS
NIOBIUM COMPOUNDS
NONMETALS
PHASE TRANSFORMATIONS
SCATTERING
TANTALUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
360202* - Ceramics
Cermets
& Refractories- Structure & Phase Studies