Abstract
Using electrodes of aluminum alloy (Al-Fe, Al-Cu, Al-Mn and Al-Zn), iron alloy (stainless steel, tool steel and Fe-Mn) and copper alloy (Cu-Sn), the relation of the composition of the electrode (solid phase) and the composition of that eroded (gaseous phase) by spark discharge was examined by the chemical analysis.
The results indicated that the compositions of the gaseous phases were the same as those of solid phases and were not affected by discharge conditions. It showed that the erosion of the electrode was the explosive eruption of vapor jet from the cathode.
