Spherical silver powder and its manufacturing method, and conductive paste

摘要

PROBLEM TO BE SOLVED: To provide a spherical silver powder coping with reducing size of electronic component, increasing density or making fine line of a conductive pattern and a manufacturing method therefor and a conductive paste.SOLUTION: There are provided a spherical silver powder constituted by a plurality of silver particles, where a surface treatment agent exists on a surface of each silver particles, cumulative 50% particle diameter D50 in a laser diffraction particle size distribution measurement method is 0.1 μm to 2.0 μm, a ratio of D50 to cumulative 90% particle diameter D90 and cumulative 10% particle diameter D10, [(D90-D10)/D50] satisfies a relationship of 2.0 or less, cumulative 100% diameter Dmax is 5.0 μm or less and less than 7 times of D50 and average of spheroidicity is 1.0 to 1.5, and a technology related to the same.SELECTED DRAWING: Figure 1