| Samples | Friction coefficient | Wear rate (10−14 m3/Nm) |
| Reference | 0.26 ± 0.01 | 7.20 ± 0.80 |
| O (300˚C) | 0.25 ± 0.01 | 7.70 ± 0.20 |
| O (350˚C) | 0.25 ± 0.01 | 7.60 ± 0.30 |
| O (400˚C) | 0.26 ± 0.01 | 6.00 ± 0.20 |