Abstract
SIMS (Secondary Ion Mass Spectrometry) and AES (Auger Electron Spectroscopy) investigations were carried out on polycrystalline LaNi5 samples and on LaNi5 samples, which have been loaded with hydrogen electrochemically. AES measurements show an enrichment of obviously oxidized La at the surface, while in the SIMS spectra the emission of negative ions attracts special attention. In contrast to the V-H- and Nb-H-system negative MexHy-ions turned out to be the most sensitive species for hydrogen detection in SIMS experiments on LaNi5. The emission of negative ions of type Nix and NiyHx, which are not observed on pure Ni are due to the electropositive character of La in this special matrix and the presence of hydrogen. The results point to a higher affinity of hydrogen to Ni than to La.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
