COPPER (II) OXIDE FINE POWDER AND METHOD FOR PRODUCING SAME

摘要

Provided is a copper (II) oxide fine powder having both excellent purity and excellent solubility in a plating solution. A production method according to the present invention involves: a dry-mode pulverization step (S1) of pulverizing an electrolytic copper powder having an oxide coating film formed on the surface of particles thereof in a dry mode; and an oxidization step (S2) of oxidizing the electrolytic copper fine powder produced in the dry-mode pulverization step. It is preferred that the oxide coating film is formed by washing an electrolytic copper powder, which is produced by the electrolysis of a solution containing copper ions, with water and then drying the washed electrolytic copper powder at a temperature of 70 to 150˚C in an oxygen-containing atmosphere. It is also preferred that the dry-mode pulverization step (S1) is carried out in an oxygen-containing atmosphere and the oxidization step (S2) is carried out by heating the electrolytic copper fine powder at 300 to 700˚C.