Preparation method of high-ductility material coated metal powder

The invention relates to the technical field of metal powder modification, in particular to a preparation method of high-ductility material coated metal powder. The preparation method comprises the steps that S1, 10%-50% by mass of a high-molecular polymer and 50%-90% by mass of metal powder are mixed, the average particle size of the high-molecular polymer is 0.1-5 microns, and the average particle size of the metal powder is 1-50 microns; s2, the mixed powder is put into a closed tank, and vacuumizing treatment is carried out; s3, the tank body is filled with inert gas, and grinding is carried out; s4, roasting the ground composite powder in an inert gas atmosphere; and S5, cooling the roasted composite powder in an inert gas atmosphere, and sieving. By means of the method, the high-ductility material can be fully and evenly attached to the surfaces of the metal particles, a compact protection layer is formed, external impurities are eradicated, the purity of the composite powder can be guaranteed, and mean