| 摘要 |
The present invention relates to a coating compositions having excellent corrosion resistance and a coating method comprising: a step of injecting iron, nickel, molybdenum, chrome, phosphorus, and boron into a melting furnace, and melting thereof to be molten steel; a step of tapping the molten metal to a tundish in which an orifice is mounted on the lower part; a step of manufacturing alloy powder by colliding fast gas with the molten metal inside the tundish while allowing the molten metal to outflow to the orifice; and a step of coating the surface of a basic material with the manufactured alloy powder. Regarding the manufactured alloy powder, the average diameter of a particle is 2-200μm; the aspect ratio of the particle is 1-1.5; the weight is 10-50% of the total weight of the injected nickel, molybdenum, chrome, phosphorus, and boron with the remainder consisting of iron. According to the present invention, the corrosion resistance of the coating composition is rendered excellent by controlling a component of the coating composition based on iron. Moreover, the coating compositions has the advantage of having excellent corrosion resistance by coating the surface of a structure, a hull, a component, and materials exposed to seawater with use of the coating composition; and by lowering maintenance costs by improving the durability of the coating layer. |
