Copper powder is widely used in mechanical and electrical parts such as powder metallurgy, electric carbon products, electronic materials, metal coatings, chemical catalysts, filters, heat sinks, and electronic aviation.

Copper has the advantages of low resistivity, low electromigration rate, and low price. It is one of the ideal substitutes for the silver palladium internal electrode. However, its chemical properties are relatively active. In the air, powdered copper with large specific surface area is very easy to be oxidized, and the surface will form Cu2O and CuO films, which will rapidly reduce its conductivity, or even become non-conductive.