Affiliation:
1. Institut für Physikalische Chemie, Westfälische Wilhelms-Universität, Schlossplatz 4/7, D-48149 Münster
Abstract
Abstract
Characteristic secondary ion emission patterns of several metal-hydrogen systems have been measured by SIMS to get information about the metal-hydrogen bonding and the structure of these systems. Results on SmCo5Dn and LaNi5Hn, and on H-D-loaded samples of the pure components are presented. The emission patterns of the secondary ions show a stronger bonding of hydrogen to Co and Ni than to Sm and La, although these transition metals, contrary to Sm or La, do not form stable hydrides under normal conditions. In these AB5-compounds the transition metal seems to be transformed to a "hydride forming material" due to the presence of the rare earth element. The secondary ion emission patterns of the hydrogen loaded intermetallics are explained and compared to those of the hydrogen loaded pure components.
The similarity in the secondary ion emission patterns of the SmCo5Dn and LaNi5Hn systems points to a general characteristic of AB5Hn materials.
Subject
Physical and Theoretical Chemistry,General Physics and Astronomy,Mathematical Physics
Cited by
9 articles.
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