AGING EFFECTS IN LA-NI-MN TRITIDES

Citation
B. Limacher et al., AGING EFFECTS IN LA-NI-MN TRITIDES, Journal of alloys and compounds, 231(1-2), 1995, pp. 792-797
Citations number
13
Categorie Soggetti
Chemistry Physical","Metallurgy & Metallurigical Engineering","Material Science
ISSN journal
09258388
Volume
231
Issue
1-2
Year of publication
1995
Pages
792 - 797
Database
ISI
SICI code
0925-8388(1995)231:1-2<792:AEILT>2.0.ZU;2-C
Abstract
Aging effects on LaNi5-xMnx tritides (0 less than or equal to x less t han or equal to 2) stored at room temperature have been investigated f or 3-5 years. Almost ail helium generated in the compounds by tritium decay was retained in the solid. Helium-induced changes in tritium P-C isotherms were observed: lowering of plateau pressure and reduction o f storage capacity. These aging effects can be reversed, at least for younger tritides, by heating at 300-380 degrees C. Thermal desorption experiments performed on aged LaNi4Mn samples showed that helium relea se from older samples occurs at lower temperatures.