Abstract
It is common wisdom that metallic glasses (MGs) exhibit excellent oxidative resistance due to their disordered structure and lack of defects and grain boundaries. A more interesting fact is that among normal MGs, aluminiferous MGs exhibit unsuspected and excessive strong antioxidant ability. However, the mechanism of antioxidation of aluminiferous MGs at very thin surface remains unknown. We report the direct atomic level observations on the dynamic process of Al2O3 forming at aluminiferous MGs surface by the high resolution transmission electron microscopy. The Al2O3 layer at surface serves as a compacted protective layer to slow down the further oxidation of MGs.
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