SILVER-COATED FLAKE TYPE COPPER POWDER AND PRODUCTION METHOD OF THE SAME, AND CONDUCTIVE PASTE USING THE SILVER-COATED FLAKE TYPE COPPER POWDER

摘要

PROBLEM TO BE SOLVED: To provide a silver-coated flake type copper powder that can maintain conductivity even in a paste with a low filler content, a production method of the silver-coated flake type copper powder, and a conductive paste using the silver-coated flake type copper powder.SOLUTION: The silver-coated flake type copper powder comprises silver-coated flake type copper powder particles having silver on at least surfaces thereof and subjected to a flattening treatment. The silver-coated flake type copper powder particles have a circularity coefficient of 0.3 or more and 0.6 or less by the measurement of a scanning electron microscope image, and have an X-ray particle diameter of 10 nm or more and 30 nm or less on an Ag (111) plane and 30 nm or more and 58 nm or less on a Cu (111) plane.SELECTED DRAWING: Figure 2