Surface Characterization of Stainless Steel 316L Coated with Various Nanoparticle Types

Table 7

Independent t-test between each coated group and uncoated 316L SS substrates.

	N	Mean (nm)	Std. deviation	t	value
Nb	9	141.4	39.21	−0.696	0.502
SS	3	157.8	9.52
Ta	9	117.8	55.82	−1.197	0.259
SS	3	157.8	9.51
V	9	88.5	27.25	−4.202	0.002
SS	3	157.8	9.51

The mean difference is significant at the 0.05 level. The bold value indicates a significant statistical difference present between surface roughness of untreated 316L SS and coated substrates by V nanoparticles.