Improved Silver-Palladium Internal Electrodes for Multilayer Ceramic Devices (Part 2)

Physical and electrical properties of three types of Ag-Pd pastes, consist of different metal fine powders, a coprecipitated, an agglomerated alloy made by heat treatment and a dispersed alloy produced by improved pulverization method, have been studied. The dispersed alloy powder paste shows a high packing density (6.3g/cm3) of dried film compared to others. The film shows a lower expansion at around 500°C and a lower shrinkage from 700 to 1100°C and a lower electrical resistivity after firing. The results indicated that the paste having an improved pulverized Ag-Pd alloy is superior to other two for internal electrode material for multilayer ceramic device.