金属腐蚀不仅带来巨大的经济损失，同时造成大量的能源浪费和潜在的安全隐患。据统计，我国钢材年产量1.6亿吨，每年因腐蚀而损耗6千多万吨，直接经济损失高达2800多亿，因此，采取有效的碳钢腐蚀防护措施刻不容缓。仿生超疏水表面拥有自清洁、抗腐蚀、减阻等优异特性，其研究在腐蚀防护领域具有广阔的应用前景，然而超疏水微纳米结构的机械稳定性和防护持久性等问题亟待解决。申请人前期研究了三嗪类缓蚀剂的合成及铝基超疏水表面的制备。本项目拟在此基础上，电沉积刚性多孔二氧化硅薄膜并负载环保高效的三嗪类缓蚀剂，在碳钢表面构建仿生超疏水复合膜，借助电化学、SEM、EDS、XRD、CA、AFM、XPS等技术研究复合膜的结构和性能，探究微纳米结构的可控制备技术和耐蚀机理。本项目提出联合缓蚀剂技术和超疏水技术共同防腐的新思路，制备方法简单可控、环保经济，有望为获取机械性和防护性良好的无氟超疏水表面提供理论依据。

The corrosion of metals not only brings tremendous economic losses, but also affects our personal safety and security. According to statistics, the annual production of steel in China is 160 million tons. Every year, more than 60 million tons of steel are scrapped because of corrosion, and the direct economic loss exceed 280 billion. Therefore, it is imperative to take effective measures for protection the corrosion of steel. Due to the good performance of super-hydrophobic surface, such as self-cleaning, anticorrosion and drag reduction, the construction of bionic super-hydrophobic film is a broad and promising application for corrosion prevention. However, the durability and stability of superhydrophobic nano-structures need to be solved urgently. Previous evidence demonstrates that triazine-dithiols are kind of efficient and environmentally friendly inhibitors. In this proposal, we plan to construct a silica film on steel surface and store inhibitor (triazine-dithiols) in its porous structure. After that, super hydrophobic silica nanoparticles will be prepared and be used to modify the surface of film. The effect of super-hydrophobic film on corrosion resistance of steel as well as the best conditions of electrodeposited silica film will be investigated by SEM、EDS、XRD、CA、AFM、XPS methods and electrochemical testing. Meanwhile the mechanical, stability and inhibition mechanism of super-hydrophobic film will be studied. This project presents a new idea of combining corrosion inhibitor and superhydrophobic technology to enhance the anticorrosion ability. The preparation process of super hydrophobic film is simple and the environmental friendly. It is expected that the research would provide a new approach and theoretical basis to obtain the excellent non-fluorine super hydrophobic layer.