Anti-Corrosion and Anti-Icing Coating Developed

Corrosion and Anti-Icing Coating Developed Corrosion and failure of metal materials has been a problem researchers and engineers have sought to solve throughout history. Biomimetic superhydrophobic materials inspired by the lotus effect, with typical non-wetting properties at the interface, have shown great potential in the field of corrosion protection. Although the corrosion-prevention function of superhydrophobic materials has been verified by researchers both domestically and internationally, many unresolved challenges remain in the transition from laboratory to practical applications. A research team led by Professor Zhang Binbin from the Institute of Oceanology at the Chinese Academy of Sciences obtained an organic-inorganic hybrid superamphiphobic coating with liquid repellency, self-cleaning, corrosion prevention and anti-icing functions. The study was published in the Journal of Materials Science & Technology. According to the researchers, the developed coating exhibits both superhydrophobic and superoleophobic properties and demonstrates excellent repellency to low surface tension liquids such as water, glycerol, ethylene glycol and peanut oil. Additionally, all sliding angles are less than 7°. The corrosion resistance of the coatings was evaluated comprehensively using electrochemical impedance spectroscopy, Tafel polarization, salt spray testing and open-air atmospheric exposure, respectively. Results showed that the coating's charge transfer resistance and low-frequency modulus increased by 7-8 orders of magnitude, withstanding 480 hours of neutral salt spray and 2,400 hours of atmospheric exposure, demonstrating significant long-term corrosion prevention potential. In addition to markedly improved corrosion resistance, the coatings also demonstrated functional integration capabilities in self-cleaning, delayed icing, lossless liquid transport and substrate applicability. The homogeneous distribution of functionalized Al2O3 nanoparticles in the coatings provides important assurance for ultimately realizing the multi-functional integration characteristics of the coatings. Prof. Zhang, the lead and corresponding author of the study, said: "We believe that the continuous improvement of functional integration and long-term stability will continue to be the focus of future research in this field." Academic Reference: Binbin Zhang et al, Hybrid superamphiphobic anti-corrosion coating with integrated functionalities of liquid repellency, self-cleaning, and anti-icing, Journal of Materials Science & Technology (2023). DOI: 10.1016/j.jmst.2023.10.042 Source