Study on rapid preparation of self-cleaning superhydrophobic 304 stainless steel surface using nanosecond laser

The superhydrophobic surface was prepared by nanosecond laser on 304 stainless steel in this paper. After laser and low temperature heat treatment, the surface of stainless steel is transformed from hydrophilic to hydrophobic. The use of lauric acid in the heating process makes the surface of 304 stainless steel become superhydrophobic and self-cleaning, and the contact angle reaches upto 159.36°. The low temperature heat treatment accelerates the wettability transition process, and the use of organic matter significantly improves the hydrophobic performance. Self-cleaning stainless steel plate surface can be widely used in a variety of food machinery, convenient cleaning.