Rose-like Cr-Fe robust super-hydrophobic surfaces with high adhesion and corrosion resistance

The superhydrophobic surface with a high adhesive state (petal effect) has attracted considerable attention owing to its potential applications in fluid transportation. In this study, the preparation of a superhydrophobic surface with a highly adhesive state on carbon steel is reported. By the combination of electrochemical deposition and double glow plasma surface metallurgy (DGPSM), a hard CrFe alloy coating with a rose petal-like microscale structure is prepared. The water contact angle of CrFe alloy coating can reach 163 degrees after modification with 1H,1H,2H,2H-Perfluorooctyltrichlorosilane (PFTEOS). Moreover, the surface exhibits excellent adhesive property with a petal effect. The linear abrasion test demonstrates that the superhydrophobic coating can resist 18 m abrasion distance under a 5 kPa pressure. In addition, electrochemical tests show that the superhydrophobic coating can prevent corrosion from carbon steel effectively. This study provides an effective method to prepare a robust superhydrophobic surface with a high adhesive state for potential industrial applications.

Automated summary

This study reports a method for preparing a superhydrophobic surface with a highly adhesive state on carbon steel and evaluates its potential applications in fluid transportation and corrosion prevention. The results show that by combining electrochemical deposition and double glow plasma surface metallurgy (DGPSM), a hard CrFe alloy coating with a rose petal-like microscale structure can be prepared, which exhibits excellent superhydrophobic and adhesive properties.