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Fabrication of surfaces with capability of repelling both water and oil is badly needed. Meanwhile, the widespread use of nanomaterials has also attracted great interest in this field. In this paper, we provided novel methods to synthesize nano amorphous tungsten oxide coatings on Al-Mg metals. After modification with FAS-17, the surface could obtain excellent superamphiphobic abilities with lower sliding angles and higher contact angles to water and oil. In addition, outstanding anti-oil pollutant and low adhesion were obtained. Furthermore, the as-prepared superamphiphobic surfaces could survive 200 cm abrasion distance under 19.6 kPa pressure on 1000 grid SiC sandpaper. It should be noted that this coatings could obtain different colors in different temperature. Meanwhile, we found that the droplets with lower surface energy and low viscosity are easier to bounce than the droplets with high surface energy and high viscosity. So the simple procedure and excellent superamphiphobicity about fabricating colorful tungsten oxide coatings have great potential in protecting Al-Mg metal and have potential applied in signals which need to prevent wetting or pollution by water and oils. On one level, this method about synthesizing nano amorphous tungsten oxide also has more promising using in other fields. [ABSTRACT FROM AUTHOR]

The amorphous WO 3 coatings are prepared by a simple chemical deposition at room temperature. And the coatings modified with FAS-17 could obtain superamphiphobicity. The chemical composition, surface morphology, surface groups were respectively investigated with XRD, XPS, SEM, FT-IR and contact angles measurement. In order to study the particles’ size, the TEM pictures is applied. The wettability of the coatings were characterized by contact angles and surface adhesion abilities. Results show that the coatings were composed of amorphous micro-nano WO 3 at 60 °C, and those coatings could be easily fabricated and obtain superamphiphobicity. In meanwhile, the coatings possessed of low adhesion and high contact angles to water and oil. [ABSTRACT FROM AUTHOR]