Influence of Coated Electrode in Nanopowder Mixed EDM of Al–Zn–Mg–Si₃N₄ Composite

Table 2

Chemical properties of electrode.

Properties	Brass electrode	Nickel coating
Electrical conductivity (s/m)	1.67 × 107	1.43 × 107
Melting point (°C)	930	1455
Thermal conductivity (W/m°K)	159	975
Electrical resistivity (ohm-cm)	4.7 × 10−8	6.99 × 10−8
Specific heat capacity (J/g-°C)	0.38	0.444