The particle size distribution of Ag powders obtained by chemical and electrochemical processes of synthesis

Abstract

The particle size distribution and the specific surface area (SSA) of silver powders obtained by chemical and electrochemical processes of synthesis have been analyzed . Silver particles produced by a chemical reaction with hydrazine as the reducing agent consisted of agglomerates of approximately spherical grains. The pine-like dendrites were formed by the potentiostatic electrolysis from the ammonium electrolyte at overpotentials inside and outside the plateau of the limiting diffusion current density. The values of average grain size and SSA for the chemically synthesized powder were between those obtained for the powders produced by electrolysis, that is detailed explained and discussed.