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

Table 5

Surface roughness of coated (Nb, Ta, and V) specimens and untreated 316L SS substrates at 3 different sputtering times (1, 2, and 3 hours).

	Sputtering times	1st reading	2nd reading	3rd reading	Mean nm	SD±
Nb	1 hr	99.9	161.5	143.4	134.9	31.66
	2 hr	111.4	126.3	230.6	156.1	64.93
	3 hr	109.5	149.6	140.7	133.3	21.06
Ta	1 hr	93.7	80.6	217.5	130.6	75.54
	2 hr	46.4	109.8	173.8	110	63.70
	3 hr	59	127.8	152	112.9	48.23
V	1 hr	83.8	36.1	136.1	85.3	50.01
	2 hr	73.7	99.9	76.6	83.4	14.34
	3 hr	106.4	98	86.1	96.8	10.20
SS		154.8	168.5	150.2	157.8	9.52