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A Simple Two-step Process for Fabrication of Super-hydrophobic Nickel Film by Electro-deposition Technique |
Shibing DING,Tengfei XIANG,Cheng LI( ),Shunli ZHENG,Qi WANG,Mengping DU |
College of Materials Science and Technology, Nanjing University of Aeronautics & Astronautics, Nanjing 211106, China |
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Abstract Micro-nano structural super-hydrophobic nickel coatings were prepared by a two-step electro-deposition technique on steel substrates. The surface morphology and wettability of the coatings were characterized by means of scanning electron microscope and water contact angle measurement. Their corrosion performance was investigated by polarization curves and electrochemical impedance technique. The results show that the petal-like micro-nano structural Ni coatings showed excellent hydrophobicity and much higher roughness rather than the bare steel. The coatings had a contact angle as high as 140.23°, which then can exceed to 150° after further modification with myristic acid. Besides, the coatings exhibit excellent corrosion resistance in the 3.5%NaCl solution.
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