| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for forming high-purity cupric oxide fine powder that has high purity and is highly soluble to a plating liquid, and a feeding method of copper ion to a copper sulfate aqueous solution used for electroplating of copper that uses the high-purity cupric oxide fine powder obtained by the manufacturing method. <P>SOLUTION: The manufacturing method of the high-purity cupric oxide fine powder in which cupric oxide coarse powder obtained by a heat treatment is ground, includes: a process of a primary heat treatment under an oxygen-containing atmosphere to obtain the cupric oxide coarse powder; a process for grinding the cupric oxide coarse powder to obtain primary heat-treated cupric oxide fine powder; and a process for secondarily heat treating the primary heat-treated cupric oxide fine powder under the oxygen-containing atmosphere. <P>COPYRIGHT: (C)2012,JPO&INPIT |
