Preparation and properties of TiSi2 spherical alloy powder by atomization
Grade 0 titanium sponge particles and crystalline silicon were mixed into a water-cooled copper cruci-ble as raw materials according to the composition of Ti-52Si(wt.％),and spherical TiSi2 powder was prepared by intermediate frequency induction heating and smelting-high-pressure gas atomization-cooling.The physical prop-erties,surface morphology,and phase content of the powder were determined and analyzed.The results show that the size of the TiSi2 spherical powder prepared in this study is mainly distributed between 15～150 μm,and the yield of the powder size less than 150 μm was＞95％.The TiSi2 alloy powder and TiSi2 condensate shell are mainly C49 phase,and the C54 phase does not appear due to the extremely fast cooling rate.As the particle size of the powder decreases,the solidified structure on the surface of the powder is gradually refined.
gas atomizationvacuum induction meltingTiSi2 powdermicroscopic organizationtarget material coating
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