| 摘要 |
PURPOSE:To obtain efficiently ultra-fine metallic particles by disposing one or both of electrodes in the form of ultra-fine particle raw material so as to face each other, inclining one electrode and generating the vapor flame of a base material in the magnetic blow direction. CONSTITUTION:The electrode 1 is disposed by inclining the same at 15-45% in the horizontal direction. The electrode 1 is acted as a cathode and a holding base 2 as an anode. An inert gas, gaseous hydrogen or gaseous hydrogen-contg. compd. is passed between the electrode 1 and the base material 3 on the base 2 and an arc is generated by current 6. The arc 7 and the arc 8 contg. metallic vapor are generated and a metallic vapor group 9 is conveyed by gaseous plasma flow 5. The electromagnetic force in the right direction shown in the figure is generated in this stage and the plasma flame flows in the same direc tion. The vapor group 9 is quickly conveyed. The efficiency for forming the ultra-fine particles in the entire current region is thus increased.
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