| 摘要 |
PROBLEM TO BE SOLVED: To provide a conductive particulate that has good electric conductivity and is excellent in adhesiveness of a conductive metal layer with a base particle.SOLUTION: A conductive particulate according to the invention includes a base particle and a conductive metal layer coating the surface of the base particle and as the conductive metal layer, includes a nickel plating layer directly formed on the surface of the base particle. The conductive particulate is characterized that in the case that arbitrarily selected 10 particles are observed about the cross section in the thickness direction of the nickel plating layer at the magnification of 100000 by use of a scanning electron microscope and three regions are arbitrarily selected from regions formed by the inner edge of the nickel plating layer with length of 500 nm, two straight lines extending toward radial direction outward from both ends of the inner edge, and the outer peripheral edge, in at least one region, there are six or more particles in which there are three or more crazing shapes with a major axis 10-70 nm formed by a grain boundary shown up on a broken-out section existing per cross sectional area of 10000 nm. |
