Cu在Al－1．17％Cu合金表面的非平衡偏聚

Non-Equilibrium Segregation of Cu on Surface of Al-1.17%Cu Alloy

Ｘ光电子能谱表明，在Ａｌ－１．１７％Ｃｕ合金氧化膜下的过饱和空位造成的空位坑中，有较大的Ｃｕ的偏聚。这种偏聚可用空位－Ｃｕ原子复合体扩散导致的非平衡偏聚理论来解释。

X-ray photoelectron spectroscopy shows that there is Cu segregation in vacancy condensation pits below oxidation layer of Al-1.17%Cu alloy sample. This phenomenon could be explained by Cu atom-vacancy complexes inducing non-equilibrium segregation.