TEM and SEM Studies of Micro and Nanoparticles Obtained by Electroerosion Discharge Machining Process in Liquid N2

Abstract

Nano and micrometric spherical iron particles were produced by the spark-erosion method using liquid nitrogen as dielectric. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), standard optical microscopy helped us to find and analyze the spheroidal particles, either hollowed and not with a particular interior and exterior surfaces. No evidences of nitrogen compounds were found.