In the military and security fields, nano-silicon coatings have attracted much attention for their excellent stealth performance and protective capabilities. By precisely controlling the size, shape and distribution of nano-silicon particles, coatings with specific absorption and scattering properties can be designed to make targets invisible under radar or infrared detection. At the same time, nano-silicon coatings can also improve the material's impact resistance, wear resistance and corrosion resistance, providing stronger protection for military equipment and security facilities.