Abstract：Using spherical zinc aluminum alloy powders as raw material, flake zinc aluminum alloy powders were prepared by mechanical wet ball milling. The effects of technological parameters such as ball grinding time, ball mill speed and ball grinding agents on product performance were investigated. Themorphology, crystalline structure, adsorptive functional groups of grinding agent, particle size and specific surface area of flake zinc aluminum alloy were characterized with scanning electron microscopy (SEM) , X-ray diffraction (XRD) , infrared spectrometer (FTIR) , laser particle size analyzer and specific surface analyzer. The results show that the ball-milled flake zinc aluminum alloy can be prepared at a rotating speed of 600 r/min, milling time of 9 h and using composite grinding agent containing diethanolamine maleic anhydride copolymer as grinding additive (with the additive dosage of 2.5%) , which exhibits good laminating degree, high luminance, uniform distribution of particle size, its diameter to thickness ratio is 36 and the average particle size is about 9 μm. It can satisfy the requirements for rich zinc aluminum coating.

Keywords：flake zinc aluminum alloy; mechanical wet ball milling; grinding agent; diethanolamine maleic anhydride copolymer