本发明提供了一种防腐防污功能一体化的改性铁基非晶复合涂层和制备方法，属于涂层领域。该复合涂层包括表面羟基化改性后的铁基非晶涂层和涂覆在非晶涂层上的纳米二氧化硅增强水凝胶，利用非晶涂层表面外露的羟基与纳米增强水凝胶产生化学键合，能大幅度提升水凝胶和非晶涂层之间的结合强度，有效结合了铁基非晶涂层优异的耐腐蚀性与水凝胶涂层的广谱防污性能，实现海洋环境中复合涂层防腐防污一体化的功能。本发明方法工艺简单，成本较低，且可有效提高水凝胶与无孔涂层间的结合强度，该复合涂层在海洋防污领域具有很好的应用前景。

The invention provides a modified iron-based amorphous composite coating with integrated anti-corrosion and anti-fouling functions and a preparation method, belonging to the coating field. The composite coating consists of an iron-based amorphous coating modified by surface hydroxylation and a nano-silica reinforced hydrogel coated on the amorphous coating. By using the exposed hydroxyl group on the surface of the amorphous coating to produce chemical bonding with the nano-reinforced hydrogel, the bonding strength between the hydrogel and the amorphous coating can be greatly improved. Effective combination of the excellent corrosion resistance of the iron based amorphous coating and the broad-spectrum anti-fouling performance of the hydrogel coating, to achieve the integrated function of composite coating anti-fouling in the Marine environment. The method has the advantages of simple process and low cost, and can effectively improve the bonding strength between the hydrogel and the non-porous coating, and the composite coating has a good application prospect in the field of Marine anti-pollution.