High-performance Ni-SiC composite coatings with enhanced infrared emissivity via magnetic field-assisted jet electrodeposition

High infrared emissivity coatings have important engineering value in aerospace and electronic devices. In this study, a new method for preparing high infrared emissivity coatings using magnetic field-assisted jet electrodeposition was prepared. The magnetic field-assisted jet electrodeposition technique can be used to prepare coatings with rough structures, and the infrared emissivity of nickel particle coatings can reach 0.80 at a magnetic field intensity of 100 mT, which is significantly improved compared with the nickel coatings (0.155) prepared by conventional electrodeposition. A nickel-based SiC composite coating with high infrared emissivity was prepared by combining magnetic field-assisted jet electrodeposition with SiC particles. Compared with the nickel particle coating, the infrared emissivity of the nickel-based SiC composite coating is further improved. At a concentration of 6 g/L SiC particles, the infrared emissivity of the nickel-based SiC composite coating reached 0.94. The synergistic effect of magnetic field-assisted jet electrodeposition and SiC particles can realize the nickel coatings into coatings with high infrared emissivity.