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

Table 2

Comparisons of nanocoating thickness at different sputtering times (1, 2, and 3 hours) and for different coating materials (Nb, Ta, and V) using the one-way ANOVA test.

	Sputtering time	1^st reading	2^nd reading	3^rd reading	Mean (nm)	SD±	ANOVA
Nb	1 hr	345.99	361.2	350.5	352.6	7.81	F = 1828.101
	2 hr	405.51	400.4	420.6	408.8	10.50
	3 hr	789.41	795.5	810.6	798.5	10.91
Ta	1 hr	550	570.4	542.8	554.4	14.32	F = 2245.684
	2 hr	1080	1086	1113.2	1093.1	17.79
	3 hr	1540	1525.5	1568	1544.5^∗	21.60
V	1 hr	183.84	190.8	197.3	190.6^∗∗	6.73	F = 580.255
	2 hr	243.25	260.5	250.1	251.3	8.67
	3 hr	416.31	410.5	429.6	418.8	9.79
ANOVA	1 hr	F = 960.192,
	2 hr	F = 3613.71,
	3 hr	F = 4330.497,

The mean difference is significant at the 0.05 level. ^∗indicates the highest achieved coating thickness, while ^∗∗indicates the lowest achieved coating thickness.