Abstract
The passivation behavior of a novel VAlTiCrSi amorphous high entropy alloy (HEA) film was investigated in artificial sea-water. The passive film, mainly composed of oxidation state of V, Al, Ti, Cr and Si, was a single-layer amorphous structure with a thickness of ~10 nm. By combining the point-defect model theory, the more excellent corrosion-resistance of HEA film than that of 304 stainless steel, is attributed to its complex composition. During the rupture process of the passive film, the Cl- mainly react with Cr element, and other elements except Cr work against the rupture process in some sense.
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