Powder Characteristics and 3D Printing Performance of Pure Ag Fabricated by Centrifugal Atomization
Pure Ag powders for 3D printing were prepared by high-speed centrifugal atomization process,and blocky Ag specimens were fabricated by selective laser melting.The relationship between flight distance with particle size dis-tribution,microstructure and element distribution was systematically investigated.The results indicate that the particle size of Ag powders prepared at 60 000 r/min fluctuates within the range of 3.8 μm to 101.2 μm.D50 powders are increased with the flight distance increase,and element contamination is hardly observed.The overall sphericity of powder is desirable without satellite powder or hollow powder,and the microstructure presents cell crystal.The blocky Ag specimen is composed of equiaxed grains with an average size of 0.14 μm.
万方数据
维普
