Research progress of superhydrophobic coatings in the field of metal corrosion protection

With its excellent mechanical properties, metal materials have a wide range of applications in aerospace, marine engineering, transportation and many other fields. However, metal corrosion is still one of the key factors restricting its widespread use in the industrial field. Drawing inspiration from nature, the researchers have successfully designed and developed superhydrophobic surfaces with special wetting properties by studying the microstructure of animal and plant surfaces such as lotus leaves. When applied to metal surfaces, it exhibits excellent corrosion resistance. In this paper, we review the research results of superhydrophobic coatings in the field of metal corrosion protection in recent years, summarize the corrosion resistance and preparation technology of superhydrophobic coatings, and expound the basic wetting theory and corrosion protection mechanism. Finally, the research status and existing problems of superhydrophobic coatings in the field of metal anti-corrosion are summarized, and the future development trend and application prospect of superhydrophobic coatings in the field of metal anti-corrosion are prospected.