| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a surface-treated copper powder that has an excellent sintering delay property, and a production method therefor.SOLUTION: Provided is a surface-treated copper powder in which x (atomic%), the concentration of element A selected from a group consisting of Al, Si, Ti, Zr, Ce and Sn, determined by multiplex measurement of XPS, per surface-treated copper powder, and y (°C), the sintering initiation temperature, satisfy an equation: 130x+560≤y; and also provided is a method for producing surface-treated copper powder, comprising: a step of obtaining an alkaline-treated copper powder by mixing a copper powder with an alkaline aqueous solution and followed by separation; and a step of obtaining a surface-adhesion reagent-treated copper powder by mixing an alkaline-treated copper powder with a surface-adhesion reagent solution comprising elements selected from Al, Si, Ti, Zr, Ce and Sn, and followed by separation.</p> |
