Synthesis And Investigation Of Electrical Properties Of Nanopowders Produced By Spark Erosion Of Silver Electrodes In The Air

The synthesis parameters and results of investigation of electrical properties of nanopowders produced by a spark erosion of silver electrodes in the air are presented. The powders are composed mostly of metallic silver (52.9 wt. %) and silver nitrate (46.5 wt. %) particles with the size less than 50 nm as determined from the transmission electron microscopy images and their specific surface area is ranging from 4 to 11 m(2)/g. The powder production rate is estimated at 0.4 g/h. The corresponding particulate films demonstrated the ultimate resistivity of 3.10(-4) Omega.cm at room temperature.