To provide silver particulates for the raw material of conductive paste exhibiting sufficient conductivity at a firing temperature of ≤200°C, and to provide conductive paste containing the silver particulates.
The silver particulates, wherein (a) the average particle diameter of primary particles is 40 to 100 nm, (b) the crystallite diameter is 20 to 70 nm, and (c) the ratio of the average particle diameter to the crystallite diameter is 1 to 5 is provided. Further, the conductive paste containing the silver particulates is provided. In the method for producing silver particulates, the silver salt of carboxylic acid and aliphatic primary amine are mixed in the presence or nonpresence of an organic solvent, next, a reducing agent is added thereto, and allowed to react at a reaction temperature of 20 to 80°C, so as to precipitate silver particulates. The silver particulates are obtained by the method, and the conductive paste contains the silver particulates obtained by the method.
COPYRIGHT: (C)2006,JPO&NCIPI
Yokoyama
Hiroki Maruyama
Takamatsu Hideki
Akito Yoshii
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