Facile fluorine-free one step fabrication of superhydrophobic aluminum surface towards self-cleaning and marine anticorrosion.

Graphical abstract Rapid, low cost and eco-friendly one step achieving of non-fluorinated Allium giganteum -like superhydrophobic aluminum surfaces with ultrahigh corrosion resistance and excellent self-cleaning ability. Highlights • Nonfluorinated SHPB surface is produced through one step electrodeposition method. • The R ct value of ED SHPB surface is 5 orders of magnitudes higher than EP Al surface. • The ED SHPB surface demonstrates a high corrosion inhibition efficiency of 99.999%. • The resultant surface exhibits prominent self-cleaning ability and lasting quality. Abstract Service performance and safety of aluminum materials are restricted by the proneness to marine corrosion. The facile and low cost fabrication of fluorine-free superhydrophobic aluminum surfaces for anticorrosion is still a challenging issue. Herein, we report a handy and versatile fabrication of nonfluorinated Allium giganteum -like superhydrophobic aluminum surfaces via one step electrodeposition approach. The surface topographies, wettability and chemical compositions were detailed characterized and discussed. In addition, we investigated the self-cleaning and low surface adhesion ability of the as-fabricated electrodeposited superhydrophobic surface. The electrochemical impedance spectra was performed to reveal the corrosion resistance and inhibition efficiency of the as-prepared superhydrophobic surface. The air-exposure and 3.5 wt% NaCl immersion tests suggest a good lasting quality of the surface. We believe the facile fabrication of fluorine-free superhydrophobic surface can meliorate many shortcomings of achieving superhydrophobicity and broaden the potential applications of aluminum-based materials towards marine-related fields. [ABSTRACT FROM AUTHOR]