Abstract
Copper segregation in a subsurface layer during annealing of Cu60Zr30Ti10 bulk metallic glass at 773 K under oxygen atmosphere has been investigated by x-ray diffraction, Auger electron spectroscopy, x-ray photoelectron spectroscopy, and scanning electron microscopy. The formation of metallic copper is strongly dependent on the annealing environment. Various oxides with metallic copper are formed after annealing in oxygen atmosphere, but only crystalline intermetallic phases are found under vacuum annealing. Besides, surface characterization results show that the sample annealed in oxygen and vacuum result in enrichment and depletion of Cu on the surface region, respectively.
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Tam, C.Y., Shek, C.H. Oxidation-induced copper segregation in Cu60Zr30Ti10 bulk metallic glass. Journal of Materials Research 21, 851–855 (2006). https://doi.org/10.1557/jmr.2006.0120
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DOI: https://doi.org/10.1557/jmr.2006.0120