Focusing on alloy system, a facile strategy was proposed to fabricate a micro/nano-structured bionic superhydrophobic surface with enhanced anti-corrosion performance. It was implemented on iron carbon alloy substrate by combining one-step anodic oxidation with designed annealing to realize a protective armor. The study verified that the metallographic features in the alloy system and heredity during the anodic oxidation were crucial preconditions to construct bionic surface. The reconstruction of the anodized oxide films triggered by designed annealing changed the wetting mechanism as well as switching the hydrophilic/hydrophobic state by forming a smaller size point-to-point contact (Cassie-Baxter State) with the droplets. The synergistic effect of this unique bionic structures and low surface energy coating made the sample surface exhibit superhydrophobic state and excellent corrosion resistance. Such combination strategy lays the foundation for constructing functional surfaces of alloy systems. More importantly, it can be extended to multicomponent alloy systems, by selecting structure features even modulating feature components to simply realize a devisable protective armor, which provides more in-depth thinking for solving the longstanding corrosion problems of engineering materials.

以合金体系为重点，提出了一种简便的策略来制造具有增强防腐性能的微/纳米结构仿生超疏水表面。它是在铁碳合金基体上通过一步阳极氧化与设计退火相结合来实现防护装甲的。研究证实，合金体系的金相特征和阳极氧化过程中的遗传是构建仿生表面的关键前提。阳极氧化膜的重建由设计的退火触发改变了润湿机制，并通过与液滴形成较小尺寸的点对点接触（Cassie-Baxter 状态）来切换亲水/疏水状态。这种独特的仿生结构和低表面能涂层的协同作用使样品表面呈现出超疏水状态和优异的耐腐蚀性。这种组合策略为构建合金系统的功能表面奠定了基础。更重要的是，它可以扩展到多组分合金体系，通过选择结构特征甚至调制特征成分，简单地实现可设计的防护装甲，为解决工程材料长期存在的腐蚀问题提供了更深入的思考。