Preparation of ZnS superhydrophobic coating on 316L stainless steel with self-cleaning property and excellent stability

Superhydrophobic effect is applied to the metal surface, which makes the metal surface obtain other excellent properties, which has attracted wide attention of researchers. By means of energy spectrometer, X-ray diffractometer and Fourier transform infrared spectroscopy, it was proved that ZnS superhydrophobic coating was successfully formed on the surface of 316L stainless steel after electrodeposition, solvothermal reaction, and chemical modification. The ZnS coating has excellent superhydrophobic properties. The contact angle and sliding angle of water droplets on the surface are 160.06 degrees and 3 degrees, respectively. Moreover, the surface morphology of the coating was observed by scanning electron microscope, and the effect of solvothermal reaction time on the microstructure of the coating was explored. The results showed that 6 h was the best time for solvothermal reaction. The superhydrophobic coating has excellent self-cleaning property, which can effectively prevent pollutants from polluting the surface. In addition, the stability of the ZnS superhydrophobic coating was also tested. The results showed that the coating has excellent mechanical stability, high-temperature stability and ultraviolet light resistance.