Title:
銅粉
Document Type and Number:
Japanese Patent JP7007890
Kind Code:
B2
Abstract:
The copper powder according to the present invention has an X-ray photoelectron spectroscopy (XPS) spectrum, which is obtained by measuring the surface of copper particles using an X-ray photoelectron spectroscope, in which the ratio P2/(P1+P0), which is the ratio of the peak intensity P1 of Cu(I) and the peak intensity P0 of Cu(0) to the peak intensity P2 of Cu(II), is 0.15–1. The proportional content of oxygen is preferably 0.15–1.2 mass%. The volume accumulation particle diameter D50 at an accumulation volume of 50 vol.%, as measured by the light scattering particle sizing technique, is preferably 0.3–10 µm.
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Inventors:
Takashi Mukino
Yoshihito Goto
Yoshihito Goto
Application Number:
JP2017243025A
Publication Date:
January 25, 2022
Filing Date:
December 19, 2017
Export Citation:
Assignee:
Mitsui Mining & Smelting Co., Ltd.
International Classes:
B22F1/00; C22C9/00; H01B1/00; H01B1/22; H01B5/00
Domestic Patent References:
| JP2006004905A | ||||
| JP2014156634A |
Attorney, Agent or Firm:
Showa International Patent Office