| US 7,510,592 B2 | ||
| Method of producing metal powder | ||
| Masatoshi Majima, Osaka (Japan); Kohei Shimoda, Osaka (Japan); Issei Okada, Osaka (Japan); Masahiro Yamakawa, Osaka (Japan); and Takashi Kasuga, Osaka (Japan) | ||
| Assigned to Sumitomo Electric Industries, Ltd., Osaka (Japan) | ||
| Appl. No. 10/559,021 PCT Filed Dec. 08, 2004, PCT No. PCT/JP2004/018281 § 371(c)(1), (2), (4) Date Nov. 30, 2005, PCT Pub. No. WO2005/065868, PCT Pub. Date Jul. 21, 2005. |
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| Claims priority of application No. 2003-434923 (JP), filed on Dec. 26, 2003; and application No. 2004-079226 (JP), filed on Mar. 18, 2004. | ||
| Prior Publication US 2007/0089565 A1, Apr. 26, 2007 | ||
| Int. Cl. B22F 9/24 (2006.01) | ||
| U.S. Cl. 75—370 [75/371] | 5 Claims |
| 1. A method of producing a metal powder, comprising:
a step of reducing ions of a metal by precipitation with a reducing agent in a liquid-phase reaction system so that the metal
is precipitated as metal powder particles,
wherein the metal ions are reduced under conditions in which the exchange-current density of an oxidation-reduction reaction
between the metal ions and the reducing agent is less than 100 μA/cm2, the exchange-current density being determined by the mixed potential theory, and
a particle size of the metal powder particles is 60 nm or less.
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