| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for silver powder, which has a grain size ranging from 0.2 μm to several μm, has a uniform grain size, is excellent dispersibility and is high in productivity. Ž<P>SOLUTION: The silver powder is manufactured by: a step (step A) of dissolving silver chloride into ammonia water to obtain silver solution; a step (step B) of adding a dispersing agent and silver fine particle slurry while stirring the obtained silver solution; a step (step C) of producing the silver on the silver fine particle by adding hydrazine of 0.7 to 2 in molar ratio as a reducing agent to the silver chloride in the silver solution after the addition of the silver fine particle slurry; a step (step D) of growing the silver powder by performing the stirring for ≥60 minutes from the end of the hydrazine addition. The silver powder obtained by the method has a grain size distribution ranging from 0.2 to 3 μm. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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