The influence of Li surface segregation on the initial oxidation of an AlLi alloy at room temperature

Abstract The initial oxidation (0–25 L O 2 ) of nonsegregated and segregated surfaces of an Al-6.5at%Li alloy has been studied at room temperature by Auger electron spectroscopy (AES), synchrotron radiation-photoelectron spectroscopy (SR-PES), static secondary ion mass spectroscopy (SSIMS), work function (Δφ) and nuclear reaction analysis (NRA). The initial sticking coefficient on the nonsegregated surface was found to be 0.048. The reaction of this surface with oxygen leads to oxide formation at exposures