Slippery liquid-infused porous surfaces (SLIPSs) have considerable potential in metal corrosion prevention due to their excellent water repellency. The complex fabrication process, poor mechanical stability, and being limited by specific substrates restrict the large-scale development of SLIPS. Here, a pre-oil-infused superhydrophobic coating (SC) for SLIPS was created through careful planning of chemical interactions and micro-nano structures. It is mechanically strong and easy to prepare. Sepiolite with a natural porous structure was chosen as the raw material, bypassing the laborious pore-making process used in traditional SLIPS manufacture. Then, by infusing silicone oil into robust SC, a sturdy SLIPS was successfully created, which allowed a variety of droplets to slide smoothly at low sliding angles (3° ~ 6°) without leaving traces, exhibiting outstanding liquid repellency to some complex droplets and organic liquids. Due to the replacement of air pockets in superhydrophobic coating by silicone oil, the corrosion current density of SLIPS (2.431 × 10⁻⁷ A·cm⁻²) is nearly 2 orders of magnitude and 3 orders of magnitude lower than that of SC and bare Mg substrates, respectively. Thus, SLIPS indicated excellent anti-corrosion ability and longer-term stability than SC after exposure to 3.5 wt% NaCl solution. This substrate-friendly coating without damaging the substrate can be used to protect a wide variety of metallic materials, independent of specific substrates. This facile method provides guidance for the large-scale fabrication of robust smooth surfaces for expanded applications.

光滑的液体注入多孔表面 (SLIPS)由于其出色的防水性，在金属腐蚀预防方面具有相当大的潜力。制造工艺复杂、机械稳定性差、受特定基材限制等限制了SLIPS的大规模发展。在这里，通过仔细规划化学相互作用和微纳米结构，为 SLIPS 创建了预注油超疏水涂层 (SC)。它机械强度高，易于制备。选择具有天然多孔结构的海泡石作为原材料，绕过了传统 SLIPS 制造中使用的费力的造孔过程。然后，通过注入硅油注入坚固的SC，成功打造出坚固的SLIPS，使各种液滴在低滑动角度（3°~6°）下顺畅滑动，不留痕迹，对一些复杂液滴和有机液体表现出优异的拒液性。由于硅油取代了超疏水涂层中的气穴，SLIPS的腐蚀电流密度（2.431 × 10 ^-7 A·cm ^-2) 分别比 SC 和裸 Mg 基板低近 2 个数量级和 3 个数量级。因此，在暴露于 3.5 wt% NaCl 溶液后，SLIPS 表现出比 SC 更好的抗腐蚀能力和更长期的稳定性。这种对基材友好的涂层不会损坏基材，可用于保护多种金属材料，与特定基材无关。这种简便的方法为大规模制造用于扩展应用的坚固光滑表面提供了指导。