METAL PARTICLES AND MANUFACTURING METHOD FOR SAME

摘要

The purpose is to provide nucleus-free, spherical, open-cell porous metal particles that do not require nuclei and result from uniform dendritic crystal growth outward from the center, and to provide a manufacturing method for the same. This manufacturing method comprises the steps of: mixing a metal salt and a polycarboxylic acid in a liquid phase; subsequently adding a reducing agent to cause metal particles to precipitate; and drying the precipitated metal particles. The nucleus-free, spherical, open-cell porous metal particles manufactured by the method are less likely to bond or aggregate together, have excellent dispersibility, can yield sufficient electroconductivity at relatively low temperatures when used in electroconductive paste or other electroconductive compositions, and are readily adjusted for specific weight and resistance.