Table 2.
Roughness parameters of Ti6Al4V surfaces at the micro- and nano-scale and surface free energy. Sa: arithmetical mean height (microscale), Sz: mean roughness depth, Sq: rooth mean square height, Sdr: developed interfacial area ratio, Sds: density of summits, ϒ: surface free energy, San: arithmetical mean height (nanoscale). The values are depicted as mean ± SD (n = 2).
| Abbr. | Group No. | Sa [µm] | Sz [µm] | Sq [µm] | Sdr [%] | Sds [103*mm−2] | San [nm] | ϒ [mN×m−1] |
|---|---|---|---|---|---|---|---|---|
| 5-F70S | 2.1 | 1.4 ± 0.04 | 17.9 ± 1.4 | 1.8 ± 0.08 | 55.5 ±2.8 | 150 ± 0.07 | 11 ± 0.3 | 21.85 ± 0.7 |
| 5-F120S | 2.2 | 1.0 ± 0.05 | 10.7 ± 0.9 | 1.3 ± 0.06 | 34.4 ± 1.4 | 165 ± 0.14 | 12 ± 2.1 | 18.45 ± 0.7 |
| 5-F180S | 2.3 | 0.8 ± 0.02 | 8.2 ± 0.2 | 1.1 ± 0.02 | 29.7 ± 0.6 | 173 ± 0.99 | 9 ± 2.2 | 22.4 ± 0.7 |
| 5-F70R | 2.4 | 1.2 ± 0.01 | 14.7 ± 0.5 | 1.5 ± 0.04 | 37.2 ± 1.7 | 150 ± 0.35 | 11 ± 3.7 | 22.8 ± 0.7 |
| 5--- | 2.5 | 0.3 ± 0.01 | 3.4 ± 0.6 | 0.4 ± 0.01 | 18.4 ± 0.5 | 183 ± 0.92 | 12 ± 3.9 | 18.95 ± 0.7 |