Low-Voltage Capacitor Electrical Discharge Consolidation of Iron Powder

Commercially pure iron powder has been processed by the capacitor electrical discharge consolidation technique. This technique applies an external pressure and, at same time, heats a metallic mass Joule effect of high-voltage and high-intensity electric current. In this work, charged low voltage used instead. The initial porosity Fe mass, i.e., precompaction pressure, number discharges from have studied. densification remaining porosity, sintering level, Vickers microhardness, resistivity sintered compacts Compacts conventional metallurgy route cold pressing furnace were also prepared for comparison. Results show that high provides resistance in column, necessary requisite to increase with discharges. Thus, final decreases 0.22 after 50 0.30. With process increases microhardness 29 51 HV10 3.53 × 10−2 5.38 10−4 Ω·m. An 0.2 does not make densify, but certain bond between particles is attained, increasing decreasing as increases. Lower porosities behave conductor no appreciable changes even