Table 3.

The surface roughness parameters for the different studied alloys.

Roughness Parameters (µm)	Machined Ti6Al4V ELI	Acid-Etched Ti6Al4V ELI	Ground Ti35Nb10Ta1.5Fe	Acid-Etched Ti35Nb10Ta1.5Fe β Phase	Acid-Etched Ti35Nb10Ta1.5Fe α + β Phase
Sa	0.07 ± 0.003	0.09 ± 0.005	0.04 ± 0.010	0.06 ± 0.018	0.20 ± 0.033
Sq	0.08 ± 0.003	0.10 ± 0.005	0.05 ± 0.010	0.08 ± 0.020	0.25 ± 0.046
Sz (DIN)	0.34 ± 0.051	0.42 ± 0.046	0.32 ± 0.064	0.35 ± 0.112	1.22 ± 0.267
Smax	0.38 ± 0.010	0.48 ± 0.081	0.40 ± 0.038	0.44 ± 0.147	1.42 ± 0.307
Sp	0.20 ± 0.015	0.31 ± 0.083	0.16 ± 0.068	0.23 ± 0.079	0.53 ± 0.089
Spk	0.91 ± 0.025	0.13 ± 0.030	0.03 ± 0.007	0.06 ± 0.013	0.11 ± 0.089
Svk	0.03 ± 0.018	0.25 ± 0.012	0.06 ± 0.010	0.05 ± 0.028	0.34 ± 0.117