Abstract
A facile and acceptable way for arrangement of non-wetting ultra-hydrophobic silica coatings is proposed in this work. The X80 steel samples with the dimension of 10 × 10 × 2 mm were used as the base metal. Commercially silica nanoparticles were modified using alkoxide organosilane as an active modifying agent. The ultra-hydrophobic silica coatings with a water contact angle of 142° were achieved (ultra-high degree of contact angle). The prepared silica coatings exhibit ultra-hydrophobicity and excellent corrosion behaviors under 3.5 wt% NaCl immersion testing conditions, which surfaces with 2.0% and 2.5% of hydrophobic silica specimens show a low corrosion potential and current, significantly. The corrosion resistance of the samples was evaluated by the electrochemical impedance spectroscopy technique also the microstructure, and surface topography of the samples was evaluated with scanning electron microscopy and Fourier transform infrared, respectively. This coating method is expected such a convincing process technology against fabricating self-cleaning coatings for the encouraging industrial implementation.
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