Abstract：The flake zinc powders were prepared by dry high energy ball milling. The orthogonal test was applied to investigate the effect of different additives formula on median particle size d₅₀, apparent density and water surface covering of the milled flake zinc powders. The optimum formula of composite additives was identified. The results show that the best mass fractions of stearic acid, palmitic acid, zinc stearate and poly-ethylene glycol are 2.5%, 0.3%, 0.3% and 0.1%. The median particles size d₅₀, apparent density and water surface covering was 13.12 μm, 0.934 8 g/cm³, 2 280.2 cm²/g. There is no new phase generated and the milled flake zinc powders are coated effectively.

Keywords：high energy ball milling; flake zinc powder; surface modification