Optimization and Prediction of Tribological Behaviour of Al-Fe-Si Alloy-Based Nanograin-Refined Composites Using Taguchi with Response Surface Methodology

Table 2

Control parameters and its level.

Symbol	Control parameters	Unit	Level
			1	2	3
A	% of ZrO2	wt.%	5	10	15
B	Load	N	9.81	19.62	29.43
C	Disc velocity	m/s	0.94	1.88	3.76
D	Sliding distance	m	1000	1500	2000