Zinc-magnesium alloy powder for thermal spraying and preparation method thereof

The invention belongs to the technical field of alloy material production, and discloses a preparation method of zinc-magnesium alloy powder for thermal spraying, which mainly comprises the following steps: mixing a zinc raw material and a magnesium raw material according to a molar ratio of 87.6: 12.4, heating to 550-570 DEG C in a nitrogen environment for melting, and keeping the temperature for 5-10 minutes to obtain a zinc-magnesium mixed solution; the zinc-magnesium mixed solution is transferred into a heat preservation crucible in a smelting chamber of the atomizing furnace, a free falling type nozzle is arranged at the bottom of the heat preservation crucible and extends into an atomizing chamber of the atomizing furnace, the aperture of the free falling type nozzle is 2-4 mm, the atomizing pressure is controlled to reach 10-10.5 bar, powder is atomized and prepared in a nitrogen environment, powder is collected and screened after powder atomization and preparation, and the zinc-magnesium mixed solutio