NON-EQUILIBRIUM SEGREGATION OF Si ON Al-0.35 wt-% Si ALLOY SURFACE

金属学报(英文版), 1993, 6(8): 98-101.

NON-EQUILIBRIUM SEGREGATION OF Si ON Al-0.35 wt-% Si ALLOY SURFACE

CHEN Niug , YU Zongsen University of Science and Technology Beijing , Beijing , China professor , Department of Materials Physics , University of Science and Technology Beijing , Beijing 100083 , China

Keywords： non-equilibrium segregation , null , null , null , null

Si segregation was observed in the vacancy condensation pits,formed by supersaturated vacancies beneath the oxidation layer of Al-0.35wt-%Si alloy,by optical microscopy,X- ray photoelectron spectroscopy and microhardness tests.This phenomenon could only be explained by vacancy-Si complex inducing non-equilibrium segregation.

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NON-EQUILIBRIUM SEGREGATION OF Si ON Al-0.35 wt-% Si ALLOY SURFACE

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