Table 2 Contact angle and surface free energy measurement results of bare SS304, Ti, TiN and TFMG coatings.
From: Non-stick syringe needles: Beneficial effects of thin film metallic glass coating
Coating material | Water (°) CA | Diiodo-methane CA (°) | Dispersive component, | Polar component, | Surface free energy, |
|---|---|---|---|---|---|
Bare | 82.1 ± 1.8 | 46.8 ± 1.4 | 36.0 | 1.6 | 37.6 |
Ti | 91.7 ± 0.8 | 50.5 ± 1.8 | 34.0 | 0.4 | 34.4 |
TiN | 93.3 ± 0.2 | 47.0 ± 1.2 | 35.9 | 0.1 | 36.0 |
TFMG | 104.0 ± 1.1 | 69.9 ± 1.3 | 22.9 | 0.1 | 23.0 |
(mN/m)