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Title:
DENDRITE-SHAPED FINE SILVER POWDER, AND ITS PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP2005146387
Kind Code:
A
Abstract:

To provide dendrite-shaped fine silver powder capable of forming a fine circuit required in the market, and to provide its production method.

The dendrite-shaped fine silver powder is obtained by an electroless wet type process. The fine powder has D10 of ≤3.0 μm, D50 of ≤12.0 μm, D90 of ≤18.0 μm, and Dmax of ≤44.0 μm all obtained by a laser diffraction scattering type particle size distribution measurement method. The dendrite-shaped silver powder is produced by excessively adding a reducing agent so that its amount is controlled to ≥3 equivalents per silver of one equivalent included in a silver nitrate solution and reacting them under agitation.


Inventors:
FUJIMOTO TAKU
SASAKI TAKUYA
YOSHIMARU KATSUHIKO
Application Number:
JP2003388584A
Publication Date:
June 09, 2005
Filing Date:
November 18, 2003
Export Citation:
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Assignee:
MITSUI MINING & SMELTING CO
International Classes:
B22F9/24; B22F1/00; H01B5/00; H01B13/00; (IPC1-7): B22F1/00; B22F9/24; H01B5/00; H01B13/00
Attorney, Agent or Firm:
Katsuhiro Yoshimura