Structure of glassy early-transition metal - late transition-metal hydrides

Technical Report · Sat Jan 01 00:00:00 EST 1983

OSTI ID:6404848

Samwer, K; Johnson, W L

Hydrogen is used as a probe for obtaining structural information on metallic glasses. Results from experimental radial distribution functions of hydrided and unhydrided Zr/sub 3/Rh and Zr/sub 2/Pd glasses show a significant change in the nearest neighbor distance of Zr atoms. The measured distance suggests that hydrogen occupies mainly tetrahedral sites defined by four Zr atoms under normal hydriding conditions (1 atm. H/sub 2/, approx. 200 C). A statistical model for these sites based on current dense random packing models is in good agreement with the observed absorption capacity for hydrogen. It is predicted that H-H interaction should limit the upper value of hydrogen content in Zr-based glasses to 2.5 (H/metal atom). 5 figures, 2 tables.

• Research Organization: California Inst. of Tech., Pasadena (USA). W.M. Keck Lab. of Engineering Materials
• DOE Contract Number: AT03-81ER10870
• OSTI ID: 6404848
• Report Number(s): CALT-822-139; ON: DE83010931
• Resource Relation: Other Information: Portions are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
36 MATERIALS SCIENCE
PALLADIUM ALLOYS
HYDRIDATION
RHODIUM ALLOYS
ZIRCONIUM ALLOYS
ADSORPTION
AMORPHOUS STATE
GLASS
HYDROGEN
INTERMETALLIC COMPOUNDS
SUPERCONDUCTIVITY
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
ZIRCONIUM HYDRIDES
ALLOYS
CHEMICAL REACTIONS
COHERENT SCATTERING
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
HYDRIDES
HYDROGEN COMPOUNDS
NONMETALS
PHYSICAL PROPERTIES
PLATINUM METAL ALLOYS
SCATTERING
SORPTION
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
080201* - Hydrogen- Chemisorption Storage
360105 - Metals & Alloys- Corrosion & Erosion