| 摘要 |
PURPOSE:To form a uniform plating layer on the surface of fine metallic powder by bringing fluidized fine metallic powder into contact with a cathode in a plating tank having an anode at the upper part and the cathode at the bottom at the time of plating the surface of finely powdered metal with another metal. CONSTITUTION:The fine metallic powder 3 is suspended in an electrolyte 5 in the plating tank having the anode 1 at the upper part and the cathode at the bottom, sucked by a pump P from the bottom, passed through a circulating pipe 6, dropped from above the plating tank, and again circulated. In the course of circulation, the power 3 is brought into contact with the cathode 2, and then forms the surface layer 4 of the layer 3 of deposited fine metallic powder. An electric current is applied between the anode 1 and the cathode 2, and the metal ion in the electrolyte 5 is electrodeposited as the metal. Since the surface of the layer 3 of the deposited fine metallic powder in the plating tank is renewed by the circulation of the electrolyte 5 through the pipe 6, and all the fine metallic powder is uniformly plated with the metal in the electrolyte 5. |
