Water dissociation and selective absorption in the Zr[V

E. Narducci, J. Kovac, F. Ghezzi, N. Venkataramani, M. Sancrotti

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Abstract

We report a study, based on x-ray photoemission spectroscopy, on the effects of element-specific selective absorption of the nonevaporable [Zr(V0.5Fe0.5)2] gettering alloy after massive exposure to water vapor (3 × 103Pa for ≈2000 h at 400°C). The specimens have been analyzed both after scraping and along a prolonged Ar+sputtering in order to comparatively discriminate intergranular versus intragranular properties. Oxygen is found to diffuse into the bulk of the alloy grains giving a distribution of Zr oxides where ZrO2is the major component. After removal of the outermost atomic layers, Fe and V show a major metallic character in the alloy volume. Traces of Zr hydroxides are also seen. The virgin (nonwater treated) [Zr(V0.5Fe0.5)2] alloy has also been comparatively measured. © 1999 American Vacuum Society.
Original languageEnglish
Pages (from-to)385 - 390
Number of pages6
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume17
Issue number2
DOIs
Publication statusPublished - 1999
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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