Improvement in Tribological Performance of Ni-P-TiO₂ Composite Coatings Using Taguchi Technique with Grey Relational Analysis

Table 6

Result of ANOVA for tribological behavior.

Source	DOF	SS	MS		% contribution
	2	0.179924	0.089962	47.81202	22.732
	2	0.168757	0.084378	44.84453	21.3218
	2	0.269887	0.134943	71.71821	34.09917
	4	0.144399	0.0361	19.18592	18.24429
	4	0.006362	0.00159	0.84524	0.803756
	4	0.007095	0.001774	0.942677	0.896412
Error	8	0.015053	0.001882		1.901842
Total	26	0.791475			100.0000

Significant at 99.9% confidence level ( and ).