Abstract:In order to promote the aplication of metal-ceramic composite for surface protection techniques of the aircraft landing gear,the microstructure, mechanical property and corrosion resistance of metallic-ceramic anti-corrosion coating are studied, and those of the cadmium titanium plating are also analyzed as comparisons. The IPcote 9183 and IPcote 9184 are prepared on the 300M steel by the new technological process named″three-time-spraying—three-time-drying—one-time-solidifying″ and″two-time-spraying—two-time-drying— one-time-solidifying″, respectivly.In contrast with the cadmium titanium plating, two kinds of metal ceramic composite possess good comprehensive mechanical properties, and have better adhesion with the 300M steel. The hardness of the IPcote 9184 coating is the highest, which is as seven times as that of the IPcote 9183 coating and four times as that of the cadmium titanium plating.The modulus of the IPcote 9183 coating is the highest, while that of the cadmium titanium plating is the lowest.The adhesive strength of the IPcote 9183 coating, IPcote 9184 coating and the cadmium titanium plating is 48.7, 15.06 and 11.82 MPa,separately. There is no excessive corrosion on the cadmium titanium plating and the IPcote 9184,9183 in the neutral salt spray (NSS) test coating for 720 h.