Robust solid slippery surface for anti-corrosion: Experimental and simulation

Corrosion has long been an enduring obstacle for researchers. It is a challenge to make progress in corrosion protection technology and understanding corrosion mechanisms for quite some time. In recent years, the slippery surface has been applied for anti -corrosion. This novel surface gives new expectation to corrosion protection technicians. Even though some researchers have constructed lots of slippery surfaces for anti -corrosion, the robustness should be improved and the intrinsic anti -corrosion mechanism also needs to be clarified. Therefore, we fabricated a solid slippery surface (SSS) via electrodeposition combined with hydrothermal method followed by solid lubricant infused into a micro -nano "metasequoia" structure. The anti -abrasion performance was enhanced due to the special structure as well as the solid lubricant. Besides, the SSS showed thermal assisted selfhealing property even after experienced abrasion. The corrosion resistance was evaluated by electrochemical experimental with the potentiodynamic polarization curve and alternating -current impedance technique. The Ecorr and Icorr of SSS were 0.029 V and 2.121 x 10-9 A & sdot;cm- 2, respectively. Furthermore, the diffusion behavior and relative concentration of corrosive particles were analyzed by the molecular dynamics simulation method. The simulation results showed that the as -prepared SSS can provide a very superior anti -corrosion property with a simulated diffusion coefficient of 2.2 x 10-9 m2 & sdot;s-1 for Cl-. This work provides technical guidance and theoretical support for the application of SSS in corrosion protection and can provide a reference for the anticorrosion mechanism of SSS.