The effect of wettability on corrosion resistance of oxide films produced by SILAR method on magnesium, aluminum and copper substrates

• Oxide films on the Mg, Al and Cu were enlarged by the SILAR methods.
• Properties of wettability for oxide films that were enlarged by the SILAR methods were viewed.
• Wettability effects of corrosion were investigated.

The CuO, MgO and Al2O3 films were deposited on Cu, Mg and Al substrates by the Successive Ionic Layer Adsorption and Reaction (SILAR) method. While the MgO thin film showed hydrophilic behavior with contact angle of 75°, the Al2O3 film was hydrophobic with the contact angle of 117°. The best enhancement in terms of the wetting behavior was obtained from the copper oxide films. For these films, maximum static water contact angle was 164°. Results showed super-hydrophobic property and unique shape of form. Moreover, the superhydrophobic surface of CuO film exhibited higher corrosion resistance than MgO and Al2O3 films.