VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
  • Evaluation of temperature-dependent surface chemistry in ZR[sub]2Fe and ZrVFe via X-ray photoemission spectroscopy
    Kovač, Janez, 1965- ...
    The near atomic composition and the character of chemical bonds in two non-evaporable gettering alloys have been investigated via core level (Zr 3d; Fe 2p; O 1st; C 1s)XPS (hv=1253.6 eV). The samples ... have been measured in UHV after in-air fracturing and various annealing steps (up to 850°C) For T>400°C a progressive and sizeable decrease of the near surface C content along with an increase in the Zr concentration is observed in both alloys. An annealing-induced Zr enrichment at the surface is found, the metallic atomic concentrations being permanently far from the nominal bulk stoichiometry. The annealing induces a strong evolution in the chemical bonds, the metallic species being completely oxidized in-air fractured samples while progressively emerging a metallic character at increasing temperatures. Surface metallization proceeds faster in Zr[sub]2Fe than in the V-containing getter.
    Vir: Surface and interface analysis. - ISSN 0142-2421 (Vol. 22, 1994, str. 327-330)
    Vrsta gradiva - članek, sestavni del
    Leto - 1994
    Jezik - angleški
    COBISS.SI-ID - 17045509

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