Research Article
Fabrication of TiO2 Crystalline Coatings by Combining Ti-6Al-4V Anodic Oxidation and Heat Treatments
Table 1
Conditions under which the different samples, thicknesses, and detected crystalline phases were obtained.
| Sample | Color | Anodizing voltage [V] | Conditions of thermal treatment (time [h] and temperature [°C]) | Thickness nm | Crystalline phase of |
| 20 | Blue | 20 | — | 48a | — | 40 | Green | 40 | — | 92a | — | 60 | Pink and yellow | 60 | — | 130b | — | 500 | Golden | — | 1 h, 500°C | 23a | — | 20-500 | Blue | 20 | 1 h, 500°C | 48a | a + r | 40-500 | Green | 40 | 1 h, 500°C | 100a | a + r | 60-500 | Pink and yellow | 60 | 1 h, 500°C | 130b | a + r | 600 | Blue | — | 1 h, 600°C | 50c | r | 20-600 | Green | 20 | 1 h, 600°C | 92b | a + r | 40-600 | Pink and yellow | 40 | 1 h, 600°C | 130b | a + r | 60-600 | Dark green and pink | 60 | 1 h, 600°C | 192b | a + r |
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Values measured by XRR; bcalculated using measured values and oxidation conditions; cestimated value using [12, 13]; da: anatase, r: rutile.
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