Patent ID: 8075949
Filing Date: 2011-12-13
Classification: B22F,H01B,H01G,Y10T

Abstract:
1. A method of production of a conductive particle comprising a core having nickel as its main ingredient and a coating layer covering said core, said method of production of a conductive particle comprising: a dispersion preparation step of preparing an aqueous dispersion containing a core powder for forming said core, a water-soluble metal salt comprising a metal or alloy for forming said coating layer, and a surfactant; a reduction deposition step of mixing said aqueous dispersion and a reducing agent to cause a metal or alloy for forming said coating layer to be deposited by reduction on the outer surface of said core powder; and a heat treatment step of heat-treating said core powder, on which said coating layer is formed on the outer surface, under conditions of a heat treatment temperature of 200 to 400° C. and an oxygen partial pressure of 10 the metal or alloy for forming said coating layer being comprised of a metal or alloy having at least one element selected from the group consisting of ruthenium (Ru), rhodium (Rh), rhenium (Re), and platinum (Pt) as a main ingredient.