Formation of ultrafine powders of binary alloy systems by plasma jet
M. Umemoto*, M. Udaka*, K. Kawasaki+, X.D. Liu*
(*Toyohashi University of Technology, +Netsuren Co. Ltd.)
Recently a new method, i.e., a plasma jet method, was developed in our lab for the production of ultrafine powders. In the present work, we investigated the formation of binary Al-Fe, Al-Si, Fe-Si, Al-Cu, Al-Ni, Ni-Ti, Fe-Cu and Fe-Ti ultrafine powders using this method. Pre-mixed pure elemental powders of various compositions of Al-Fe, Al-Si, Fe-Si, Al-Cu, Al-Ni, Ni-Ti, Fe-Cu and Fe-Ti were used as starting materials. These premixed powders were injected into the plasma jet of Ar-N₂ working gas to form ultrafine powders. The obtained ultrafine powders were characterized by x-ray diffraction and transmission electron microscope to check the microstructures of ultrafine particles.
Keywords: allloys, intermetallic; nanophase; plasma spray
Order No.: JA806-012 © 1998 MRS

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