Particle Size Distribution of Copper Nanosized Powders Prepared by Pulsed Wire Discharge

Abstract

Copper nanosized powders have been prepared by pulsed wire discharge (PWD). The charging voltage and ambient gas pressure dependence on the particle size distribution has been investigated. The particle size ranged from 10 to 100 nm, and the distribution profile agreed with that of log-normal distribution. The median diameter decreased with the decrease in the ambient gas pressure, but did not change on the charging voltage.