Fabrication of CuO hierarchical flower-like structures with biomimetic superamphiphobic, self-cleaning and corrosion resistance properties

The wettability of metal surface has attracted great attention of researchers because of its potential application in academic research and practical application. In this work, hierarchical structures consisted of micro-flowers and secondary nano-sheets have been fabricated via electrodeposition and solution-immersion process on X90 pipeline steel substrate. The CuO flower-like structures in situ grew on the surface of deposition Cu coating via chemical reactions in the process of solution-immersion, which was similar to the surface morphology of the lotus leaf. After fluorinated modification, the CuO film on the X90 pipeline steel exhibited a fine superamphiphobic, and an excellent self-cleaning property had also been showed. Besides, potentiodynamic polarization measurement indicated that the superamphiphobic CuO film obviously improved the corrosion resistance of the X90 pipeline steel. The superamphiphobic CuO film of the steel substrate surface was achieved by a simple and inexpensive process that was suitable for any shape, which also provided new multifunctional applications of deposition metal coating including superamphiphobic, self-cleaning and corrosion resistance properties. (C) 2015 Elsevier B.V. All rights reserved.