Aging effects in palladium and LaNi sub 4. 25 Al sub 0. 75 tritides

Conference · Sun Mar 01 00:00:00 EST 1992 · Fusion Technology; (United States)

OSTI ID:5102220

Nobile, A; Wermer, J R ^[1]; Walters, R T ^[2]

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1. Savannah River Lab., Aiken, SC (United States)
2. Princeton Univ., NJ (United States). Plasma Physics Lab.

Palladium and LaNi{sub 5{minus}x}Al{sub x} (x = 0.30, 0.75, 0.85), which from reversible hydrides, are used for tritium processing and storage in the Savannah River Site (SRS) tritium facilities. As part of a program to develop technology based on the use of reversible metal hydrides for tritium processing and storage, the effects of aging on the thermodynamic behavior of palladium and LaNi{sub 4.25}Al{sub 0.75} tritides are under investigation. During aging, the {sup 3}He tritium decay product remains in the tritide lattice and changes the thermodynamics of the tritium-metal tritide system. Aging effects in 755-day-aged palladium and 1423-day-aged LaNi{sub 4.25}Al{sub 0.75} tritides are reported. Changes in the thermodynamics are determined by measuring tritium desorption isotherms on aging samples. In palladium, aging deceases the desorption isotherm plateau pressure and changes the {alpha}-phase portion of the isotherm. aging-induced changes in desorption isotherms are more drastic in LaNi{sub 4.25}Al{sub 0.75}. Various processes occurring in the tritide lattice which might be responsible for the observed aging effects in palladium and LaNi{sub 4.25}Al{sub 0.75} tritides are discussed in this paper.

• DOE Contract Number: AC09-89SR18035
• OSTI ID: 5102220
• Report Number(s): CONF-910920-; CODEN: FUSTE
• Journal Information: Fusion Technology; (United States), Vol. 21:2; Conference: 4. topical meeting on tritium technology in fission, fusion, and isotopic applications, Albuquerque, NM (United States), 29 Sep - 4 Oct 1991; ISSN 0748-1896
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Fu
36 MATERIALS SCIENCE
Ma
ALUMINIUM COMPOUNDS
AGING
LANTHANUM COMPOUNDS
NICKEL COMPOUNDS
PALLADIUM COMPOUNDS
TRITIDES
TRITIUM
PROCESSING
DAUGHTER PRODUCTS
DESORPTION
HELIUM 3
ISOTHERMS
QUATERNARY COMPOUNDS
SAVANNAH RIVER PLANT
STORAGE
THERMODYNAMIC PROPERTIES
AMINES
AMMONIUM COMPOUNDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
EVEN-ODD NUCLEI
HELIUM ISOTOPES
HYDROGEN COMPOUNDS
HYDROGEN ISOTOPES
ISOTOPES
LIGHT NUCLEI
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
RADIOISOTOPES
RARE EARTH COMPOUNDS
SORPTION
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
TRITIUM COMPOUNDS
US AEC
US DOE
US ERDA
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES
700460* - Fusion Technology- Heating & Fueling Systems
Fuels- (1992)
360204 - Ceramics
Cermets
& Refractories- Physical Properties
700480 - Fusion Technology- Component Development
Materials Studies- (1992-)