Hydrogen diffusion behavior in titanium-chromium hydrides with laves structures

Conference · Tue Jun 01 04:00:00 EDT 1982

OSTI ID:5349356

Bowman, Jr, R C; Craft, B D; Attalla, A; Johnson, J R

Extensive NMR measurements of the proton relaxation times have been performed on low (i.e., ..cap alpha..-phase) and intermediate (i.e., ..cap alpha..-phase) hydrogen concentrations in TiCr/sub 2/H/sub x/ with both the hexagonal C14 and cubic C15 Laves structures. The relaxation times indicate rapid diffusion rates above 200 K for all the TiCr/sub 2/H/sub x/ phases; however, large differences in the diffusion activation energies are observed. This behavior is associated with the hydrogen interstitial site occupancies and diffusion pathways becoming restricted in the C14 structure.

• Research Organization: Monsanto Research Corp., Miamisburg, OH (USA); Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC04-76DP00053
• OSTI ID: 5349356
• Report Number(s): MLM-2901; CONF-820605-5; ON: DE82011665
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
080200* -- Hydrogen-- Storage
Transport & Handling
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
CHROMIUM COMPOUNDS
CHROMIUM HYDRIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CUBIC LATTICES
DIFFUSION
ELEMENTS
HEXAGONAL LATTICES
HYDRIDES
HYDROGEN
HYDROGEN COMPOUNDS
HYDROGEN STORAGE
LAVES PHASES
MAGNETIC RESONANCE
NONMETALS
NUCLEAR MAGNETIC RESONANCE
RELAXATION TIME
RESONANCE
STORAGE
TITANIUM COMPOUNDS
TITANIUM HYDRIDES
TRANSITION ELEMENT COMPOUNDS