Porosity Analysis of Plasma Sprayed Coating by Application of Soft Computing

Table 1

Experimental operating parameters used during plasma spraying of fly ash + quartz + ilmenite.

Operating parameters	values
Plasma arc current (Amp)	270, 300, 400 and 420
Arc voltage (volt)	40, 45 and 50
Torch input power (KW)	11, 15, 18 and 21
Plasma gas (argon) flow rate (IPM)	28
Secondary gas (N2) flow rate (IPM)	3
Carrier gas (Ar) flow rate (IPM)	12
Powder feed rate (gm/min)	12, 15 and 18
Powder size (µm)	40, 60, 80 and 100
Torch-to-base distance (TBD) (mm)	100