A kind of preparation method of steel biomimetic multi-scale superhydrophobic functional surface

Abstract

The invention relates to a preparation method of a steel bionic multiscale dewatering function surface, which belongs to the technical field of metal material surface modification. The existing preparation method of the metal material dewatering function surface is mostly expensive in equipment, complex in operation and limited in popularization and application. The preparation method comprises conducting shot blasting treatment on steel surface to form coarse surface, and simultaneously refining surface grains and increasing grain boundary and microdefects; then adopting hydrochloric acid solution to conduct chemical corrosion on the surface, and further refining microcosmic details of surface topography through preferential corrosion of acid liquor on the grain boundary and the microdefects; and finally conducting lower-energy decoration on the surface, and obtaining the bionic multiscale dewatering function on the material surface. A contact angle formed by the fact that water is dropped on the bionic surface is 150 degrees, and superhydrophobicity degree is achieved. The preparation method is simple in process, easy in operation, free of limitation of substrate shapes and apt to conduct industrial production.

Description

technical field [0001] The invention belongs to the technical field of surface modification of metal materials, and in particular relates to a method for performing shot peening treatment, chemical etching and low-energy modification on the surface of steel materials, so that the surface of steel materials can obtain bionic multi-scale hydrophobic functions. [0002] Background technique [0003] Hydrophobic surfaces have broad application prospects. Studies have shown that applying hydrophobic surfaces to building materials such as glass, ceramics, and concrete can make the material self-cleaning. Applying hydrophobic surface to textiles can produce waterproof, anti-fouling and self-cleaning effects; applying hydrophobic surface to metal materials can produce effects of self-cleaning, anti-corrosion, and reducing friction coefficient; applying hydrophobic surface to the shell of ships and ships Or the inner wall of the pipe, which can reduce the frictional resistance betwe...

AI Technical Summary

Problems solved by technology

Although these methods can obtain hydrophobic and oleophobic properties, they often require expensive equipment and the operation process is cumbersome, which increases the manufacturing cost and limits its popularization and application.

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