Method for producing a composite plated product
View Patent ↗There is provided a composite plated product wherein a coating of a composite material containing carbon particles in a silver layer is formed on a substrate, the composite plated product having a large content of carbon and a large quantity of carbon particles on the surface thereof and having a low coefficient of friction and an excellent wear resistance. Carbon particles treated by an oxidation treatment and a silver matrix orientation adjusting agent are added to a silver plating solution for electroplating a substrate to adjust the orientation of a silver matrix to form a coating of a composite material, which contains the carbon particles in a silver layer, on the substrate.
1. A method for producing a composite plated product, the method comprising the steps of:
preparing carbon particles and a silver matrix orientation adjusting agent which is an agent for adjusting the orientation of a silver matrix, said silver matrix orientation adjusting agent containing selenium ions;
treating said carbon particles by an oxidation treatment for removing lipophilic organic substances from the carbon particles;
adding the treated carbon particles and said silver matrix orientation adjusting agent to a cyanide containing silver plating solution to disperse and suspend the treated carbon particles therein to prepare a composite plating solution of silver and the treated carbon particles; and
electroplating a substrate in the composite plating solution, which contains the treated carbon particles and the silver matrix orientation adjusting agent, to form a coating of a composite material, which contains the treated carbon particles in a silver layer, on the substrate.
2. A method for producing a composite plated product as set forth in claim 1 , wherein said silver matrix orientation adjusting agent is potassium selenocyanate.