In Vitro Corrosion Studies of Surface Modified NiTi Alloy for Biomedical Applications

Table 3

Average surface roughness values of various NiTi samples from surface profilometer and AFM measurements.

Sample	Surface roughness, (nm)
	Profilometry	AFM
Bare NiTi	76.8 ± 6.8	1.7 ± 0.1
EP20V	66.2 ± 5.2	2.5 ± 1.2
EP20VPIE	151.2 ± 13.1	30.8 ± 2.4