SILVER-COATED COPPER POWDER AND CONDUCTIVE PASTE, CONDUCTIVE MATERIAL, AND CONDUCTIVE SHEET USING SAME

摘要

Provided is a silver-coated copper powder that has a dendritic shape, that ensures excellent conductivity as a result of having an increased number of points of contact when silver-coated dendritic copper particles are in contact, that prevents aggregation, and that can be suitably used in a conductive paste, an electromagnetic wave shield, or the like. The silver-coated copper powder comprises amassed dendritic copper particles 1 having a linearly grown main trunk 2 and a plurality of branches 3 branching from the main trunk 2. The surface of the copper particles 1 is coated with silver. The main trunk 2 and the branches 3 of the copper particles 1 have a flat plate shape in which the average cross-sectional thickness is more than 1.0 µm but no more than 5.0 µm. The silver-coated copper powder has a flat plate shape configured from a layered structure of one layer or a plurality of stacked layers. The average particle size (D50) is 1.0-100 µm.