Abstract：The flake silver powders were prepared by planetary ball milling, and then characterized by scanning electron microscopy(SEM) and thermogravimetric analyzer(TGA).Based on the characterization results, the impacting factors on fabrication and treatment of flake silver were studied. With the conditions that spherical powder as precursor, zirconia balls as balls, ethanol as milling media, milling speed with 200 r/min, the mass ratio of ball and powder with 12:1, the mass ratio of media and powder with 2:1, fill factor with 0.5, and oleic acid as milling aids, the high flaky silver powder with different particle size is prepared with the increase of milling time. After being treated, the surface of silver particle is rough, and TGA is less than 0.1%. The result shows that the flake silver powder achieves the application standard.

Keywords: flake silver powder; kinetic energy of milling; ball; milling speed; flaky rate