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A simple and efficient method has been developed that combines sandblasting and electro-brush plating to achieve carbon steel surface hydrophobicity and excellent corrosion inhibition. The Ni coating surface morphology, hydrophobicity, chemical constituents, and corrosion resistance are characterized via scanning electron microscopy (SEM), contact angle measurements, X-ray photoelectron spectroscopy (XPS), and electrochemical workstation, respectively. Results suggest that cauliflower-like compound microstructures fabricated via electro-brush plating play a key role in surface hydrophobicity. Further, hydrophobicity is a function of sub-millimeter irregular rough structures formed through sandblasting. Specifically, sandblasting increases the hydrophobicity of the cauliflower-like structure surface, with a contact angle reaching 150.0 . Different surface structure parameters lead to different surface hydrophobicity values, and corrosion resistance is higher with better surface hydrophobicity. The academic and applied implications of these findings are discussed.

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