Novel Precipitation Method for Producing Dispersed Crystalline Copper Powders for Electronic Applications

摘要

The paper describes a simple environmentally friendly method for preparing dispersed crystalline copper particles by reacting aqueous dispersions of CuCl with Fe(II) citrate. By varying the experimental conditions, it was possible to obtain copper particles with sizes from 0.5 to 1.5 um. In contrast with other powders precipitated in aqueous solutions, the powders obtained by this method display a very good oxidation resistance. This attribute, along with the simplicity of the process and the absence of polymeric dispersants, makes the described method a versatile and economical route for preparing copper powders suitable for electronic applications.