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Compared to HVOF technology, high-speed arc spraying technology has a of spraying high efficiency, energy saving, cost-effective spraying good coating performance obtained and semi-automatic. 2 powder ratio adjustment, prepared by the already HVOF Fe-15Al/45Cr 3 C six different ingredients cored wire, switch to high-speed arc spraying (HVAS), the structural materials reproduced Fe-Al/Cr 3 C 2 intermetallic compound coatings excellent high temperature corrosion resistance, erosion performance, a solid step towards its practical promotion and application. 2 composite bonding strength of the coating, micro-hardness, high-temperature corrosion, high temperature erosion performance and room temperature friction and wear characteristics carried the the six Fe-Al/Cr 3 C testing. Using a scanning electron microscope (SEM), EDS (EDS), modern X-ray diffraction instrument (XRD) were used to study the three better performance of high-speed arc spraying Fe-Al/Cr 3 C 2 composite coating microstructure of coating corrosion at high temperatures, erosion mechanism as well as the mechanism of action of cerium oxide, the main conclusions are as follows: the coating has a typical layer like structure, few pores, flat particles are fine and good bonding between the particles, between the layers there is a thin oxide layer. The coating phase mainly including Fe, Al, CR 3 C 2 in the of Fe 3 the Al / FeAl, of FeCr and a certain amount of Ce < sub> 2 Ni 7 . The three kinds Fe-Al/Cr 3 C 2 composite coating and the substrate bonding strength higher than 33MPa, the The microhardness of 444.32HV, equivalent 44.02HRC room temperature wear losses were lower than 50.0% of the matrix 20G. Three composite coatings have a typical parabolic corrosion kinetics, with excellent hot corrosion resistance. After 150 hours of hot corrosion, three Fe-Al/Cr 3 C 2 the composite coatings Average corrosion weight gain are 20G 67.25%, 37.32% and 29.15 %, respectively, is the the the HVOF spraying Fe-15Al/45Cr 3 C 2 composite coating of 74.6%, 41.4% and 32.3%. Three composite coating has good resistance to erosive wear performance, effective protection matrix. Whether in the case of the erosion of the 45 ° or 90 ° angle of attack, due to anomalies in the matrix of the Fe-Al yield behavior, the erosion of the coating weightlessness both as the temperature increases and decreases. Test the performance of the three composite coating, indicating that the coating has good process performance, and low cost, high efficiency spray, and more suitable for large area production practice. The three Fe-Al/Cr 3 C 2 composite coating can promote the use of governance in the thermal power plant boiler \
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