Abstract：Cu-3Ag-0.5Zr alloy powder was fabricated by argon gas atomization, and its particle size distribution, oxygen content, apparent density, flowability, morphology, phase and microstructure were investigated. The results show that argon gas atomized Cu-3Ag-0.5Zr alloy powders are almost spherical and normal distribution. 90% of particle size of the powders is less than 200 μm. The median diameter Dv(50) is about 49.9 μm. Oxygen content (mass fraction) of Cu alloy powders with size less than 50 μm, between 50-106 μm and more than 106 μm are 0.067%, 0.039% and 0.013%, the apparent density are 4.39, 4.95 and 5.02 g/cm3, and the flowability are 16.59, 15.96 and 15.62 s/50 g, respectively. The microstructure of the powders is fine and homogeneous, and the average grain size is 3.82 μm. The microstructure of large particle size powders is dendritic crystal structure and the microstructure of small particle size powders is equiaxed crystal structure. There is no obvious Ag or Zr second-phase precipitation in powder matrix, and the structure of powder is a homogeneous supersaturated solid solution.
文靖瑜, 刘祖铭, 麻梦梅, 吕学谦. 氩气雾化制备Cu-3Ag-0.5Zr合金粉末的显微组织及性能[J]. 粉末冶金材料科学与工程, 2019, 24(4): 329-333.
WEN Jingyu, LIU Zuming, MA Mengmei, LÜ Xueqian. Microstructure and properties of Cu-3Ag-0.5Zr alloy powder prepared by argon gas atomization. Materials Science and Engineering of Powder Metallurgy, 2019, 24(4): 329-333.
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2019, Vol. 24 
