The slices of Cu-Al-Mg alloy with thickness of 0.1 mm are prepared. Some samples are respectively activated at the tempertures of 590℃ and 620℃. The seeondary emission factors () are determined. The composition of the surface and the electron binding-energy are studied by means of XPS and ABS. It is proved that the oxide layer consisting of Al2O3 and MgO can be formed naturally at room temperature. This oxide layer exhibits lower electron binding-energy, high and satisfactory stability.
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