Abstract
Resolving structural and componential characteristics of passive film is a long-standing challenge in corrosion science since it’s difficult to separate extremely thin passive films. In this work, the passive films are successfully separated from Ti-Zr-Be-Al/Ni/Fe glassy substrates as large-area thin membranes by the designed “Ribbon-Penetration” method. The homogeneous and continuous passive films are identified as a single-layer amorphous structure, whose primary components are TiO2, ZrO2 and BeO. Alloying Ni or Fe element could induce the enrichment of TiO2 in the passive films and improve the structural compactness, resulting in the superior corrosion resistance in 3.5 wt.% NaCl solution.
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