SILVER MICROPARTICLE POWDER AND METHOD FOR PRODUCTION THEREOF

摘要

Disclosed is a silver microparticle powder which has an organic protective film and also has such a board grain size distribution that a CV value as calculated in accordance with the formula (1) by employing the grain size measured by the observation on a TEM (a transmission electron microscope) is 40% or greater. The organic protective film may be composed of a fatty acid having a molecular weight of 100 to 1000 (e.g., oleic acid) and an amine compound having a molecular weight of 100 to 1000, wherein at least one of the fatty acid and the amine compound has one or more unsaturated bonds per molecule. CV value = 100 X [standard deviation ofgrain size cD]/[average grain diameter DTEM] (1)