Patent ID: 7514022

Claim:
A method for producing a composite plated product, the method comprising the steps of: treating carbon particles by a wet oxidation treatment which adds an oxidizing agent to a suspension which contains the carbon particles suspended in water for removing lipophilic organic substances from the carbon particles; adding the treated carbon particles to a silver plating solution to disperse and suspend the treated carbon particles therein without using any additives and without coating the surface of said carbon particles to prepare a composite plating solution of silver and the treated carbon particles; and electroplating a substrate in the composite plating solution containing the treated carbon particles dispersed and suspended therein, to form a coating of a composite material, which contains the treated carbon particles in a silver layer, on the substrate, wherein said carbon particles are scale-shaped graphite particles having a thickness of 0.1 to 1.0 μm and a mean particle diameter of 1 to 10 μm.