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The aircraft serving in the marine environment is easy to cause the corrosion of its structure due to the long-term influence of the harsh environment such as seawater and salt mist. In order to improve the corrosion resistance of aircraft structure, plasma spraying and laser cladding were used to prepare Fe-based amorphous coatings on the surface of 304 stainless steel. The microstructures of the coatings were characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD), and their microhardness was tested using a Vickers hardness meter. The corrosion behavior of Fe-based amorphous coatings in the simulated seawater environment was studied by potentiodynamic polarization curve measurement and electrochemical impedance spectroscopy. The results showed that the Fe-based amorphous coatings prepared by these two surface technologies have good corrosion resistance, and can reduce the corrosion rate of aircraft structure, so as to ensure the safety of flight operation. [ABSTRACT FROM AUTHOR]