| 摘要 |
PROBLEM TO BE SOLVED: To obtain a copper powder having a suitable particle size distribution for the filler of a conductive paste, by reproducibly manufacturing copper powders each having an aimed and uniform particle size, and mixing the copper powders of different particle sizes. SOLUTION: The method for manufacturing the copper powder having a narrow width of the particle size distribution comprises adding a reducing agent to (1) a mixture comprising a copper powder with an average particle size of 0.1μm or larger, a solid component consisting of a copper compound, and a liquid medium, (2) a mixture comprising the copper powder with an average particle size of 0.1μm or larger, and a liquid medium including copper ions, or (3) a mixture comprising the copper powder with the average particle diameter of 0.1μm or larger, the solid component consisting of the copper compound, and the liquid medium including the copper ions; and reducing the solid component and/or the copper ions to metallic copper. COPYRIGHT: (C)2005,JPO&NCIPI
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