| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide flat copper particles having a high filling density of particles, and enabling easy control of viscosity when being changed into paste. <P>SOLUTION: This flat copper particle has a contour defined by a plurality of approximately linear sides in a plan view, comprises a flat body in which each angle formed by adjacent sides is≥60°and <180°, and has an average particle size of 0.05-0.5μm. The flat copper particles are produced preferably by a method including the first reduction process and the second reduction process performed thereafter. In the first reduction process, reducing sugar or hydrazine is used as a reducing agent, and in the second reduction process, two or more kinds of reducing agents whose hydrogen reduction standard potential E<SP POS="POST">0</SP>is -1.11 to -1.24 V are used as the reducing agent. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
