[Retracted] Optimization of the Spark Plasma Sintering Process for High-Volume Fraction Tungsten Carbide/Al 2025 Composites

Table 3

Calculation indices of the L9 orthogonal array.

Orthogonal array	A	B		C
Density
K11	2.94	2.90		2.85
K12	2.91	2.90		2.92
K13	2.88	2.91		2.93
R	0.03	0.02		0.06
Level of optimum	A2	B3		C3
Bending strength
K11	709.1		709.26	632.42
K12	716.12		692.42	732.87
K13	658.18		691.27	726.34
R	51.83		22.94	93.62
Level of optimum	A2		B1	C2